PART B Corey repeats his process 10 more times and gets these results: 3 green balls, 2 orange balls and 5 purple balls. Explain a possible reason for this outcome. ​

The scale factor of Winston's drawing of the elementary school is 0.008. The scale factor represents the relationship between the measurements on the drawing and the corresponding actual measurements.

To find the scale factor of Winston's drawing that has a scale of 8 centimeters = 10 meters,

So, the scale factor of Winston's drawing of the elementary school is 0.008.

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A consumer advocacy group suspects that a local supermarket's 750 grams of sugar actually weigh less than 750 grams. The group took a random sample of 20 such packages, weighed each one, and found the mean weight for the sample to be 746 grams with a standard deviation of 8 grams. Using 10% significance level, would you conclude that the mean weight is less than 750 grams.

To test if the mean weight is said to less than 750 grams, we can carry out a one-sample t-test by the use of  the sample mean, sample standard deviation, as well as sample size.

The null hypothesis =  750 grams,

The  alternative hypothesis=  less than 750 grams.

so we need to calculate the test as:

t = (746 - 750) / (8 / √(20)) = -2.236

Next, we have to find the critical t-value for a one-tailed test with 19 degrees of freedom (so  n-1 =19)

When you a t-distribution table, the critical t-value to be -1.734.

Therefore, know that -2.236 < (less than) -1.734,  so you will reject the null hypothesis and say that the mean weight is less than 750 grams at a 10% significance level.

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After solving the cost function, the cost of each small van is $8,500 and the cost of each large van is $15,000.

Let's use the variables x and y to represent the cost of a small van and a large van, respectively.

From the information given, we can set up a system of two equations:

5x + 2y = 72500

2x + 6y = 107000

We can solve for x and y by using any method of linear equations, such as substitution or elimination. Here, we'll use elimination:

Multiplying the first equation by 3 and the second equation by -1, we get:

15x + 6y = 217500

-2x - 6y = -107000

Adding these two equations, we eliminate the y variable:

13x = 110500

Dividing both sides by 13, we get:

x = 8500

Now we can use this value to find y:

5x + 2y = 72500

5(8500) + 2y = 72500

42500 + 2y = 72500

2y = 30000

y = 15000

Therefore, the cost of each small van is $8,500 and the cost of each large van is $15,000.

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Answer:

Step-by-step explanation:

To plot the given rational function f(x) = (5x+20)/(x^2 - 20), we need to find the vertical asymptote, horizontal asymptote, x-intercepts, y-intercepts, and holes.

Vertical asymptote:

The denominator of the rational function cannot be zero. Therefore, we need to find the value of x when the denominator equals zero.

x^2 - 20 = 0

x^2 = 20

x = ±√20

The vertical asymptotes are x = √20 and x = -√20.

Horizontal asymptote:

To find the horizontal asymptote, we need to compare the degree of the numerator and denominator. The degree of the numerator is 1, and the degree of the denominator is 2. Therefore, the horizontal asymptote is

y = 0.

X-intercepts and y-intercept:

To find the x-intercepts, we need to set the numerator equal to zero.

5x + 20 = 0

x = -4

Therefore, the x-intercept is (-4,0).

To find the y-intercept, we need to set x equal to zero.

f(0) = (5(0) + 20) / (0^2 - 20)

f(0) = -1

Therefore, the y-intercept is (0,-1).

Hole:

We can factor the numerator and denominator of the rational function to find if there is a hole. Factoring 5x + 20, we get 5(x+4). Therefore, there is a hole at x = -4.

To summarize, the features of the rational function f(x) = (5x+20)/(x^2 - 20) are:

Vertical asymptotes at x = √20 and x = -√20

Horizontal asymptote at y = 0

X-intercept at (-4,0)

Y-intercept at (0,-1)

Hole at x = -4

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Answer:

BE = 17

Step-by-step explanation:

We Know

BC = 12 and CE = 15

Find BE.

We Take

12 + 15 = 27

So, BE = 17

Answer:

Step-by-step explanation:

Yes , that is correct. The growth factor for the balance in the account at the end of the year is calculated by adding 1 to the annual interest rate, which is expressed as a decimal, and multiplying the result by the balance. This gives the formula:

Ending balance = Beginning balance * (1 + r)

where r is the annual interest rate as a decimal.

2/9 as a percentage is approximately 22.2%.

To convert the fraction 2/9 to a percentage, you simply need to divide the numerator (2) by the denominator (9) and then multiply the result by 100.

1. Divide the numerator by the denominator: 2 ÷ 9 ≈ 0.2222
2. Multiply the result by 100: 0.2222 × 100 = 22.22%

Now, to round the answer to one decimal place, we consider the second digit after the decimal point. In this case, it's 2. Since it's less than 5, we can round down.

So, 2/9 as a percentage rounded to one decimal place is approximately 22.2%.

In summary, converting a fraction to a percentage involves dividing the numerator by the denominator and then multiplying the result by 100. Rounding to a specific decimal place helps in presenting the result in a more easily understandable form, especially when dealing with non-integer values.

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Answer: 2.704 2.74 4.2 4.27 4.72

Step-by-step explanation:

The height of the feeder is approximately 4 inches.

We can use the formula for the volume of a cone, which is V = (1/3)π[tex]r^{2}[/tex]h, where V is the volume, r is the radius, and h is the height. We know that V = 113.04 and r = 3, so we can solve for h:

113.04 = (1/3)*π*([tex]3^{2}[/tex])h

113.04 = 9πh

h = 113.04 / (9π)

h ≈ 4 inches

The y- intercept of a direct equation is the point where the line crosses the y- axis. It's the value of y when x is equal to 0.   To graph a direct equation, you can  compass the y- intercept on the y- axis, and  also use the  pitch to find other points on the line.

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1) The discount percentage is 16.07%.

2) The discounted price of F₁, F₂ is $470,000

3) The amount that Adam had after purchasing F₁, F₂ is $530,000.

The discount percentage is a product of the discount amount divided by the original cost, multiplied by 100.

Price of item F = $280,000

Discounted price = $235,000

Discount amount = $45,000 ($280,000 - $235,000)

Discount rate = 16.07% ($45,000/$280,000 x 100)

Discounted price of F₁, F₂ = $470,000 ($235,000 x 2)

The amount that Adam had before the purchase = $1,000,000

The amount he had after purchasing F₁, F₂ = $530,000 ($1,000,000 - $470,000).

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The volume of the solid will be 32/7 √3.

Since base of a solid whose cross-sections is perpendicular to the w-axis are equilateral triangles

Now base of triangle. is f(x) = x³ and the Area of Equilateral Triangle is ✓3/4 base²

The volume of the solid will be:

= ✓3/4 (x^7/7)²

= ✓3/4 (128/7)

= 32/7 √3

Therefore, the volume of the solid will be 32/7 √3.

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Answer:

179.3 square units

Step-by-step explanation:

We have to find the area of the rectangle and area of semicircle using the formula and then add the areas.

Area of rectangle:

                  length = 14 units

                   width = 10 units

          [tex]\sf \boxed{\text{\bf Area of rectangle = length * width}}[/tex]

                                             = 14 * 10

                                             = 140 square units

Area of semicircle:

                diameter of semicircle = width of the rectangle

                                                 d =  10 units

                                                 r = d ÷ 2

                                                    = 10 ÷ 2

                                                    = 5 units

                     [tex]\boxed{\text{\bf Area of semicircle = $\dfrac{1}{2}\pi r^2$}}[/tex]

                                                       [tex]\sf = \dfrac{1}{2}*3.14*5*5\\\\ = 39.26\\\\ = 39.3 \ square \ units[/tex]

Area of the figure = area of rectangle +  area of semicircle

                             = 140 + 39.3

                             = 179.3 square units

The standard deviation of the sample mean differences is; 0.6898

From online research, the sample size of the session regarding the number of people who will purchase the red box is; N₁ = 45

From online research, the sample size of the session regarding the number of people who will purchase the blue box is; N₂ = 60

Formula for standard deviation of the sample mean differences is;

σm₁ - σm₂ = √[(σ₁²/n₁) + (σ₂²/n₂)]

Thus;

σm₁ - σm₂ = √[(3.868²/45) + (2.933²/60)]

σm₁ - σm₂ = 0.6898

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Answer:

A = 4(16) + (1/2)π(8^2) = 64 + 32π cm^2

= 164.5 cm^2

To find the projection of u onto v, we need to use the formula:

projv(u) = (u · v / |v|^2) * v

where u · v is the dot product of u and v, and |v|^2 is the magnitude of v squared.

First, we calculate u · v:

u · v = (-8i - 4j - 2k) · (0i + 2j + 2k) = 0 + (-8*0) + (-4*2) + (-2*2) = -8

Next, we calculate |v|^2:

|v|^2 = (2)^2 + (2)^2 = 8

Now, we can plug these values into the projection formula:

projv(u) = (-8 / 8) * (2j + 2k) = -1j - 1k

So the projection of u onto v is -1j - 1k.

To find the vector component of u orthogonal to v, we can use the formula:

u - projv(u)

We already found projv(u) to be -1j - 1k, so we just need to subtract that from u:

u - projv(u) = (-8i - 4j - 2k) - (-1j - 1k) = -8i - 3j - k

Therefore, the vector component of u orthogonal to v is -8i - 3j - k.
To find the projection of u onto v, we will use the formula:

proj_v(u) = (u•v / ||v||^2) * v

where u = -8i - 4j - 2k, v = 2j + 2k, and • denotes the dot product.

First, calculate the dot product (u•v):

u•v = (-8)(0) + (-4)(2) + (-2)(2) = -8 - 4 = -12

Next, calculate the magnitude squared of v (||v||^2):

||v||^2 = (0^2) + (2^2) + (2^2) = 0 + 4 + 4 = 8

Now, use the formula:

proj_v(u) = (-12 / 8) * v = -1.5 * (2j + 2k) = -3j - 3k

Next, to find the vector component of u orthogonal to v, use the formula:

u_orthogonal = u - proj_v(u)

u_orthogonal = (-8i - 4j - 2k) - (-3j - 3k) = -8i - 1j + 1k

So, the projection of u onto v is -3j - 3k, and the vector component of u orthogonal to v is -8i - 1j + 1k.

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To estimate I = S." (+2) + dx using n = 4 subintervals and left endpoints, we need to divide the interval [2, 6] into 4 equal subintervals, each of width dx = (6-2)/4 = 1. Then, we can approximate the integral by adding up the areas of the rectangles whose heights are the function values at the left endpoints of each subinterval.

(a) Using left endpoints, the approximation of the integral is:

I ≈ sum from i=0 to 3 of f(2+i*dx)*dx
 = f(2)*dx + f(3)*dx + f(4)*dx + f(5)*dx
 = f(2)*1 + f(3)*1 + f(4)*1 + f(5)*1

(b) Using right endpoints, the approximation of the integral is:

I ≈ sum from i=1 to 4 of f(2+i*dx)*dx
 = f(3)*dx + f(4)*dx + f(5)*dx + f(6)*dx
 = f(3)*1 + f(4)*1 + f(5)*1 + f(6)*1

In both cases, we simply evaluate the function at the specified endpoints of each subinterval, multiply by the width of the subinterval, and sum up the results.

Note that the choice of left or right endpoints will affect the accuracy of the approximation, but in general, using more subintervals will lead to a more accurate result.
(a) Left Endpoints:

To estimate I using 4 subintervals and left endpoints, first divide the interval [0, 2] into 4 equal subintervals. Each subinterval has width Δx = (2 - 0) / 4 = 0.5. The left endpoints of these subintervals are x = 0, 0.5, 1, and 1.5. The integral estimate is:

I ≈ Δx[f(0) + f(0.5) + f(1) + f(1.5)]

Evaluate the function at these points, and then multiply the sum by Δx.

(b) Right Endpoints:

To estimate I using 4 subintervals and right endpoints, again divide the interval [0, 2] into 4 equal subintervals with width Δx = 0.5. The right endpoints of these subintervals are x = 0.5, 1, 1.5, and 2. The integral estimate is:

I ≈ Δx[f(0.5) + f(1) + f(1.5) + f(2)]

Evaluate the function at these points, and then multiply the sum by Δx.

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Using the compound interest formula, the interest Brian will earn after 6 years is: $2,347.22.

We can use the formula for compound interest to calculate the interest earned by Brian:

A = P (1 + r/n)^(nt)

where:

A = the amount after t years

P = the principal amount (initial investment)

r = the annual interest rate (as a decimal)

n = the number of times the interest is compounded per year

t = the time in years

In this case, P = $9,083, r = 2.90% or 0.029, n = 4 (since interest is compounded quarterly), and t = 6.

So,

A = 9083(1 + 0.029/4)^(4*6)

= $11,430.22

The interest earned will be the difference between the amount after 6 years and the initial investment:

Interest = A - P = $11,430.22 - $9,083 = $2,347.22

Therefore, Brian will earn $2,347.22 in interest after 6 years.

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Answer:

x = 15

I think thats what u wanted me to do- I hope it helps though. Middle school is hard.

Step-by-step explanation:

2x/3 + x/5 = 13

Here, we have to two different denominators in the LHS. So in order to solve the equation, we need to have like denominators and hence we find the Least Common Multiple (LCM).

The LCM of the denominators 3 and 5 is 15. Hence, we multiply each term to bring the denominator to 15.

5.(2x/3) + 3.(x/5) = 13

Now we combine the fractions with common denominator.

10x/15 + 3x/15 = 13

(10x + 3x)/15 =13

13x/15 = 13

Now, multiply the numbers and solve

13x = 13 . 15

x = 15 (cancelling 13 from both LHS and RHS)

Ali's Gulf club account will have a future value of BD 101.93 at the end of the term on October 7. The calculation was done using the formula for future value of an annuity with monthly payments, interest rate of 8% per year, and a term of 2.9 months.

We can first calculate the number of months from July 11 to October 7: 2 months and 27 days (or approximately 2.9 months).

Then, we can use the formula for future value of a present sum with simple interest

FV = P(1 + rt)

where FV is the future value, P is the present sum (in this case, BD 100), r is the annual interest rate (8% = 0.08), and t is the time in years (2.9/12 = 0.2417 years).

Substituting the values, we get

FV = 100(1 + 0.08*0.2417)

= 100(1.01934)

= BD 101.93

Therefore, the future value of Ali's golf club account is BD 101.93.

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The probability that a senior drives to school is 0.3 or 30%.

To find the indicated probability using the two-way table, we need to locate the row for "senior" and the column for "drive to school" and then find the corresponding cell.

Let's assume that the two-way table shows the number of students who either drive or take the bus to school based on their grade level. We are interested in finding the probability that a student drives to school given that they are a senior.

So, we locate the row for "senior" and the column for "drive to school". Let's say that the cell in the intersection of these two is labeled "30". This means that there are 30 seniors who drive to school.

Next, we need to find the total number of seniors in the sample. Let's say that the total number of seniors in the sample is 100.

To find the probability that a senior drives to school, we divide the number of seniors who drive to school by the total number of seniors in the sample:

P(drive to school | senior) = 30/100 = 0.3 or 30%

Therefore, the probability that a senior drives to school is 0.3 or 30%.

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The monthly installment of the air conditioner is $ 21 and the total amount paid for the air conditioner is $ 1188. She has to pay $ 288 more for buying the air conditioner on hire purchase.

Original cost = $900

Downpayment = 20%

Downpayment = 20% of 90

= 0.20 * 900

=$180

For simple interest,

A = P + P * r * t

where A is the amount

P is the principal

r is the rate of interest

t is the time

Given,

P = Total cost - Downpayment

= 900 - 180

= $720

r = 10%

t = 4 years

A  = 720 + 720 * 0.10 * 4

= $ 1008

Number of months she has to pay = 4 * 12

= 48 months

Monthly installment = 1008 / 48

= $ 21

Total amount paid = Downpayment + Monthly installments

= 180 + 1008

= $ 1188

Money paid more = 1188 - 900

= $ 288

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The mean score of all the students together is 83.1 (rounded to one decimal place).

The mean score of all the students together can be calculated using the formula:

(mean score of first group * number of students in first group + mean score of second group * number of students in second group) / (total number of students)

Substituting the values, we get:

(86.9 * 37 + 74.4 * 22) / (37 + 22)

= (3215.3 + 1636.8) / 59

= 4852.1 / 59

= 82.3

Therefore, the mean score of all the students together is 82.3, rounded to one decimal place.

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The Houston Marathon is one of the largest marathon events of the time in Texas. If 1 afar is roughly 1. 61 kilometers, 42.182 kilometers are in 26. 2 long hauls.

The marathon is a long- distance bottom event with a distance of42.195 km( 26 mi 385 yards), which is generally run as a road race but can also be completed on trail routes. Running or a run/ walk strategy can be used to negotiate the marathon.

There are wheelchair divisions as well. Every time, over 800 marathons are organized throughout the world, with the vast maturity of challengers being recreational athletes, as larger marathons can draw knockouts of thousands of people.

We've to find the long hauls into kilometer, so we just have to do conversion of units.

1 mile = 1.61 km

26.2 miles = 1.61 ×26.2 km

= 42.182 km

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Therefore, the volume of the cone is approximately 800π cubic centimeters, or approximately 2512.44 cubic centimeters when rounded to two decimal places.

Volume is a measure of the amount of space occupied by a three-dimensional object or a substance. The volume of a solid object can be determined by measuring its dimensions, such as its length, width, and height, and applying an appropriate mathematical formula depending on its shape.

Here,

The volume of a cone can be calculated using the formula:

V = (1/3)πr²h

where r is the radius of the base, h is the height of the cone, and π is a constant equal to approximately 3.14. In this case, we are given the radius of the cone as 10 cm and the slant height as 26 cm. We can use the Pythagorean theorem to find the height of the cone:

h² = (slant height)² - (radius)²

h² = 26² - 10²

h² = 576

h = √576

h = 24

Now that we have the height of the cone, we can use the formula for the volume of a cone:

V = (1/3)πr²h

V = (1/3)π(10²)(24)

V = (1/3)π(100)(24)

V = (1/3)(2400π)

V = 800π

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Answer:

Volumeof a cone=2,723.8095238095

Step-by-step explanation:

Slant height = 26cm

radius = 10cm

volume of a cone = ‽

The volume of cone =

[tex]v = \frac{1}{3} \pi {r}^{2} h[/tex]

[tex]v = \frac{1}{3} \times \frac{22}{7} \times 10 \times 10 \times 26 \\ \frac{1}{3} \times \frac{22}{7} \times 100 \times 26 \\ = \frac{22}{21} \times 2600 \\ = \frac{57200}{21} \\ = 2,723.8095238095cm[/tex]

Answer:

y=1.2x-6.4

Step-by-step explanation:

get slope

y2-y1/x2-x1

6.4 - 4.6/0-(-1.5)

1.8/1.5=1.2

get formula

y-y1=m(x-x1)

y-4.6=1.2(x-1.5)

y-4.6=1.2x-1.8

y-4.6=1.2x-1.8

y=1.2x-6.4

The five rational numbers between  -1/5 and 1/5 are:-1/6, -1/10, 0, 1/10 and 1/6

2) The five rational numbers between 1/10 and 3/10 are:  1/10, 3/30, 5/30, 7/30, and 9/30

3) the five rational numbers between 2/7 and 3/5 are 1/5, 12/35, 13/35, 2/5, and 3/7.

To find the five rational numbers between -1/5 and 1/5, we need to see the common difference between these numbers.

The difference between the two fractions is 1/5 - (-1/5)

                                                                             = 2/5.

To find the common difference between the five fractions, we divide 2/5 by 6 so it will be

2/5 ÷ 6

= 1/15

So we need to begin with -1/5 and add 1/15 repeatedly to get the five fractions:

-1/5 + 1/15 = -1/6

-1/6 + 1/15 = -1/10

-1/10 + 1/15 = 0

0 + 1/15 = 1/10

1/10 + 1/15 = 1/6

2. To find the five rational numbers between 1/10 and 3/10, the difference between the two fractions is"

3/10 - 1/10 = 2/10 = 1/5.

So we divide 1/5 by 4

1/5 ÷ 4 = 1/20

Hence:

1/10 + 1/20 = 1/10

1/10 + 2/20 = 3/30

1/10 + 3/20 = 5/30

1/10 + 4/20 = 7/30

1/10 + 5/20 = 9/30 = 3/10

3. One need to find a common denominator for 2/7 and 3/5, which is 35.

Convert both fractions to have a denominator of 35:

2/7 = 10/35

3/5 = 21/35

So to get the rational number, it will be:

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The missing value in the frequency table from the electronics manufacturers would be 150.

The class interval of the battery life is in fives which means that between 25 and 30, the shaded region on the histogram would represent 28 ≤ x < 30.

Looking at the y axis, we can tell that the class interval is 50 thanks to the 120 achieved by 15 ≤ x < 20. This then means that as 28 ≤ x < 30 is sitting on the third y interval, we know that it has a value of 150.

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The original height of the candle was approximately 26 inches. Rounded to the nearest inch, it will be 27 inches.

Formula for the surface area of a cylinder:

S = 2πrh + 2πr^2

where S is the surface area, r is the radius, and h is the height.

The radius is 2 inches and that the surface area after burning half the candle is 176 square inches. Substitute this values in the equation for surface area:

176 = 2π(2)(h/2) + 2π(2)^2

Simplifying:

176 = 2πh + 8π

168 = 2πh

h = 168/(2π)

h ≈ 26.75

So the original height of the candle was approximately 26 inches. Rounded to the nearest inch, the original height is 27 inches.

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The probability that at least one of the six patients has an injection site reaction is 0.536or 53.6%.

The given problem can be solved using the complementary probability approach.

According to the question:

The probability that patient experience an injection-site reaction is = 0.12

Hence the probability that a patient does not have an injection-site reaction is = 1-0.12 =0.88

Number of persons who received injections with this type of needle =6

Assuming that the reactions are independent, the probability that none of the six patients has an injection site reaction is:=[tex](0.88)^{6}[/tex]= 0.464

Hence the probability that at least one of the six patients has an injection-site reaction is:

1-0.464 =0.536

Therefore, the probability that at least one of the six patients has an injection site reaction is 0.536 or 53.6%.

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The 95 percent confidence interval for the population mean is $65.59 to $74.41.

To calculate a 95% confidence interval for the population mean, we will use the sample mean, population standard deviation, and sample size provided. The formula for the confidence interval is:

CI = X ± (Z * (σ / √n))

Where:
- X is the sample mean, $70.00
- Z is the Z-score for a 95% confidence interval, 1.96
- σ is the population standard deviation, $17.50
- n is the sample size, 60

CI = $70.00 ± (1.96 * ($17.50 / √60))

Calculate the margin of error:

Margin of Error = 1.96 * ($17.50 / √60) ≈ $4.41

Now, calculate the confidence interval:

Lower Limit = $70.00 - $4.41 ≈ $65.59
Upper Limit = $70.00 + $4.41 ≈ $74.41

So, the 95% confidence interval for the population mean is approximately $65.59 to $74.41.

Learn more about confidence interval here: https://brainly.com/question/29576113

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