Here are summary statistics for randomly selected weights of newborn girls: n=250, x_=32.9 hg, s=6.9 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 31.9 hg < μ < 34.5 hg with only 19 sample values, x_ = 33.2hg, and s = 2.9 hg?
Answer:
Step-by-step explanation:
Here are summary statistics for randomly selected weights of newborn girls: n=250, x_=32.9 hg, s=6.9 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level.
The confidence interval of mean
=32.9 ± 1.96 × 6.9/250
Confidence Interval = 32.9 ± 0.5382
State the domain and range
of f(x) = x²
Answer:
Domain : All real numbers
Range: y >= 0
Step-by-step explanation:
Answer:
range :all real numbers
domain: all real numbers
12
B
4
E
D
3
A
Link= REPORT
(A) 4
(B) 5
(C) 3
(D) 6
Someone pls help!!
Answer:
i would say B
Step-by-step explanation:
PLEASE HELP!!!!!
The model represents the quotient of two fractions.
Which equation does this model represent?
A. 5/6 ÷ 1/2 = 1 2/3
В. 2 1/2 ÷ 1/2 = 5/6
C. 5/6 ÷ 2 1/2 = 1/3
D. 2 1/2 ÷ 1/2 = 5
9514 1404 393
Answer:
D.
Step-by-step explanation:
The shaded portion of the three large rectangles is 2 1/2 of them. The divisions indicated by the fractions at the bottom are 1/2. The figure shows that 2 1/2 can be divided by 1/2 with the result that 1/2 goes into 2 1/2 five times.
This description seems to match the equation of choice D.
What is the probability of choosing a 6 of clubs that's also a red card from a deck of cards? Type your answer as a fraction.
Answer:
4/52
Step-by-step explanation:
What is the area of rectangle PQRS?
A.
20.25 square inches
B.
21.375 square inches
C.
27.00 square inches
D.
42.75 square inches
Answer:
D
Step-by-step explanation:
(4.5+3+2) x4.5 = 42.75
hope this helps
Answer:
D. 42.75 square inches
Step-by-step explanation:
Area = height x width
Height = 4.5 inches
Width = 3 + 4.5 + 2 = 9.5 inches
4.5 x 9.5 = 42.75 square inches
Find the RANGE
135 120 125 133 66 78 81 91 145 135 68
A plane descends 1000 ft while flying
2.7 mi. What is the angle of descent?
Answer:
4.02°
Step-by-step explanation:
The angle of descent can be obtained using trigonometry ;
Since we have a right angled triangle ;
Let's use the relation:
Sin θ = opposite / hypotenus
Hypotenus = 2.7 miles
1 mile = 5280 feets
2.7 miles = (2.7 * 5280) = 14256 feets
Sin θ = 1000 / 14256
Sin θ = 0.0701459
θ = sin^-1(0.0701459)
θ = 4.0223674
When y=x^2 is transformed to y=(x+1)^2-3 , the corresponding graph is shifted a) 1unit left and 3 units down. c) 1 unit left and 3 units up. b) 1 unit right and 3 units down. d) 1 unit right and 3 units up.
A gym charges $25 per month plus extra four dollars to swim in a pool for an hour if a member only has $45 to spend each month at most how many hours can’t remember swim
Answer:
5 hours
Step-by-step explanation:
So the set fee is 25. 45-25 = 20. Now, 4 dollars an hour. 20/4 = 5, so 5 hours
triangle PQR is similar to triangle XYZ if PQ = n + 2, QR = n - 2 and XY=n^2 - 4, what is the value of YZ, in terms of n?
Answer:
(n-2)²
Step-by-step explanation:
If triangle PQR is similar to triangle XYZ, then;
PQ/QR =XY/YZ
Given
PQ = n + 2,
QR = n - 2 and
XY=n^2 - 4,
Substitute
n+2/n-2 = n²-4/YZ
n+2/n-2 = (n+2)(n-2)/YZ
1/n-2 = n-2/YZ
Cross multiply
YZ = (n-2)(n-2)
YZ = (n-2)²
Hence the value of YZ in terms of n is (n-2)²
Hhhhhhhhhhhhheeeeeeellllllllppppppppp
Answer:
With whattttttttttttttttttttttttttt
Step-by-step explanation:
Each student in her 8th grade math class presented her with a cookie. One-third of the students each gave her an oatmeal cookie, one-sixth of the students each gave her a cinnamon cookie, one-fourth of the students each gave her a chocolate chip cookie, and the remaining 9 students each gave her a peanut butter cookie. How many students are in Mrs Vo's 8th grade math class?
Answer:
36. There are 36 students in the class.
Step-by-step explanation:
4/12 oatmeal
2/12 cinnamon
3/12 chocolate
9 peanut
The fractions added together = 9/12
This means the 9 students = 3/12 of the class
3 x 4 = 12
9 x 4 = 36
find x
help please asap
Answer:
i think it is 51 degrees
Step-by-step explanation:
find the length of x
help please i need it ssap
Answer:
x = 5.5
Step-by-step explanation:
5+6 = 11
[tex]\frac{2.5}{x}[/tex]=[tex]\frac{5}{11}[/tex]
cross multiply
5x = 27.5
x = 5.5
Help with math. Please
Answer:
I DONT KNOW THE ANSWER
Step-by-step explanation:
I need help asap please! 20 points!
Graph the parabola.
y=x²–2x-4
Plot five points on the parabola: the vertex, two points to the left of the vertex, and two points to the right of the vertex. Then click on the graph-a-function
button
This is the graph I hope this helps
ANSWER THE QUESTION FOR BRAINLIEST
Answer:
the third one
Step-by-step explanation:
it is a line that keeps continuing that way
In the expression 8 × ( 13 − 8 ) ÷ 4 + 5 , what is the first computation that should be completed?
Answer:
(13-8)
Step-by-step explanation:
It is in parenthesis which is the first thing you complete because PEMDAS ✨
the answer must be (13-8)
96 = 12d
A. 108 B. 84 C. 8 D. −1 8
Answer:
Step-by-step explanation:
Answer:
I dont know
Step-by-step explanation:
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Can anyone double check this to make sure I’m correct?
Answer:
looks like it's right!
Step-by-step explanation:
Answer:
I got 33.82
Step-by-step explanation:
1. Name the side lengths of a 30 degree triangle. Hint adjacent, opposite, and hypotenuse.
the length of a rectangle is five inches less than three times its width . if the perimeter of the rectangle is 150 inches , find the dimensions.
Step-by-step explanation:
let x be the width of the rectangle.
given
length =
[tex]3x - 5[/tex]
inches.
also given Length + Width = 150 inches,
[tex]3x - 5 + x = 150 \\ 4x - 5 = 150 \\ 4x = 150 + 5 \\ 4x = 155 \\ x = 155 \div 4 \\ = 38.75in[/tex]
Since
Length = 3x-5 in
Width = x in,
Length = 3(38.75) - 5 = 111.25 in
Width = 38.75 in
What is the greatest common factor of 6, 42, and 30?
Answer:
6
Step-by-step explanation:
I found that the greatest common factor for those numbers is 6
Mrs. Smith is shopping for a toy chest to go
in her kids' playroom. She looks at the options
shown.
How much floor space will toy chest A take up?
Answer: 20ft
Step-by-step explanation:
floor space is only worried about the area of the base, so A would be 4*5 or 20
Answer:
20
Step-by-step explanation:
Help due tonight!!
2. What is m < 2?
3. What is m <4?
Plz show work for both
Answer:
I think that you need a better teacher because this on, gives, extremely... hard questions
(Btw like the profile name)
PLEASE hURRY The population, P, of six towns with time t in years are given by the following exponential equations: (i) P = 1000 (1.08) Superscript t (ii) P = 600 (1.12) Superscript t (iii) P = 2500 (0.9) Superscript t (iv) P = 1200 (1.185) Superscript t (v) P = 800 (0.78) Superscript t (vi) 2000 (0.99) Superscript t Which towns are growing in size? a. i, ii, and iv c. i, ii, and iii b. iii, v, and vi d. vi, i, and ii
Answer:
Its A
Step-by-step explanation:
I got it right on Edge Test
The function that depicts town that is growing in size are P = 1000 (1.08)^t and 1200 (1.185)^t
Expoenential functions
The standard exponential function is expressed as:
y = ab^x
The value of b will determine whether the towns are growing in size or not, For instance;
If b > 1 then the town is growing, else it is declining
From the given exponential functions, the function that depicts town that are growing in size are P = 1000 (1.08)^t and 1200 (1.185)^t
Learn more on exponential function here; https://brainly.com/question/12940982
Liam has a bag containing 5 red, 2 blue, 5 green, 6 yellow and 2 white marbles that
are all the same size and shape. What is the probability of randomly choosing 2 green
marbles without replacing?
Answer:
5 green
20 total
first green = 5/20 = 1/4
second green = 4/19
(1/4)(4/19) = 1/19
Step-by-step explanation:
Help..........................
Answer:
-21 yd
Step-by-step explanation:
[tex]-31-2+12=-21[/tex]
Brainliest for correct answer, asap please.
Answer:
Not a function
Not a function
Function
Step-by-step explanation:
The 1st one isn't as clear in the picture, but it looks like the ends of each line overlap the each other.
