Answer:
246.
Step-by-step explanation:
a) The 95% confidence level two-tail confidence interval for the mean value of the key index of this batch is between 98.22 and 99.78
b) The minimum sample size to achieve this is 246.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population(square root of the variance) and n is the size of the sample. So in this question,
The lower end of the interval is the sample mean subtracted by M. So it is 99 - 0.78 = 98.22
The upper end of the interval is the sample mean added to M. So it is 99 + 0.78 = 99.78.
a) The 95% confidence level two-tail confidence interval for the mean value of the key index of this batch is between 98.22 and 99.78
(b) (5 points) If we want the sampling error to be no greater than 0.5, what is the minimum sample size to achieve this based on the same confidence level with part (a)
We need a sample size of n
n is found when
Then
Rounding up
The minimum sample size to achieve this is 246.
I need help with matching the variable to its correct length
Is there a photo to show us what the variables are?
What is the median. Also i have two more questions that have median.
Answer: 61
Step-by-step explanation:
Answer:
61
Step-by-step explanation:
Work your way from the outside and you'll get 61
Please I need help ASAP
A shirt is on sale for 30% off. The expression p - 0.30p, where p is the original cost of the shirt, can be used to find the sale price. Which expression means the same as decreased by 30%?
Answer: 0.70
Step-by-step explanation the same as decreased by 30%" would be (1.00 - 0.30)(original cost), or 0.70(original cost)
Identify the volume of the figure in cubic units.
Answer:
8 cubic units
Step-by-step explanation:
Count it. It's all visible for this question.
5 for every $2.50 10 for every ?
Answer:
5 dollars
you do 2.50 x 2 because 5 x 2 makes 10, and you have to do what you do to one side, to the other.
Help with math question
Answer:
degree 4
terms 2 and 4
Step-by-step explanation:
Please help.
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.
Answer:
A, C
Step-by-step explanation:
What is the value of s?
units
B.
8
15
D
Answer:
17
Step-by-step explanation:
In triangle ABD,
By pytagoras theorem,
s^2 = 8^2 + 15^2
= 64 + 225
s^2 = 289
s = 17 units
How can I find the prime factorization of a number with an easy explanation?
Answer:
Step-by-step explanation:
Step 1: Start by dividing the number by the first prime number 2 and continue dividing by 2 until you get a decimal or remainder. Then divide by 3, 5, 7, etc. until the only numbers left are prime numbers. Step 2: Write the number as a product of prime numbers.
What is the slope of the line?
(Khan Academy)
Answer:
1/3 seria el resultado
Plss help
Which number line shows the solution to 1x +1<5?
Answer:
second
Step-by-step explanation:
x +1<5
x<5-1
x<1<4
What is the answer to this question please
Answer:
450cm3
Step-by-step explanation:
10 times 5 times 9
Answer:
Simple . the cuboid have to go to GYM to Work out the Volume . 1+2= 11 Answer
Simplify the following expression by combining like terms.
Answer:
5p + 2w + 2
Step-by-step explanation:
Add the following weights:
5 lb 9 oz
+ 1 lb 9 oz
Ib
OZ
Answer:
7 lbs 2 oz
Step-by-step explanation:
6 lbs 18oz
18 - 16 = 2oz
Three interior angles of a polygon are,100degrees,120degrees,and 108degrees.Find the remaining two sides,if one of them is three times the other
Answer:
Joe Mama :))))))))))))))))))))))
Step-by-step explanation:
Helpppp meeee plzzzzz
Answer:
No
Step-by-step explanation:
As the hypotenuse is not equal to base and perpendicular.
anything helps this is the last one
Answer:
i am pretty sure it's a.
Step-by-step explanation:
i hope this helps :)
Answer:
it's -2sqrt7
the first answer
Step-by-step explanation:
pls mark me brainliest!
−8
≥ -5 ???????????????????????????
Answer:
If your asking if it’s true or false then it is false
Step-by-step explanation:
If you want to make it a true statement then it would be -8<-5
which table shows the relationship y=k/x where k is a real number
Answer:
the answer is 1/5 because y/x gives you k
Step-by-step explanation:
Tasha has foam blocks stored in a box that measures 314 ft long by 3 ft wide by 1 ft tall.
Each foam block is a cube with 14 -ft edge length.
How many blocks can fit into the box?
(A) 156 blocks
(B) 312 blocks
(C) 624 blocks
(D) 2496 blocks
Explanation is in a file
bit.[tex]^{}[/tex]ly/3a8Nt8n
Find the total surface area of this cone.
Leave your answer in terms of T.
24.in
SA =? - in2
Answer:
SA = 360π in²
Step-by-step explanation:
The slant height l is the hypotenuse of the right triangle inside the cone.
Using Pythagoras' identity to find l
l² = 24² + 10² = 576 + 100 = 676 ( take the square root of both sides )
l = [tex]\sqrt{676}[/tex] = 26
Then
SA = πrl + πr²
= (π × 10 × 26) + (π × 10²)
= 260π + 100π
= 360π in²
you deposit $1050 into an account that pays 7.25% interest per year. find the amount after six year given the following:
a) compounded semiannually b) compounded monthly
Pythagorean
Diego props a 10ft ladder against the wall how high up will the ladder reach if the foot of ladder is 5 feet away from the wall ?
Answer:
5√3 ft
Step-by-step explanation:
If the ladder is 10ft tall, then that represents the hypotenuse. If the foot of our ladder is 5ft away from the wall, that is a side length that we know. Using the Pythagorean Theorem, a²+b²=c², where a and b are side lengths of a right triangle, and c is the hypotenuse, we can solve for the missing side length:
a²+b²=c²
(5)²+b²=(10)²
25+b²=100
b²=75
b=√75
b=5√3
So the ladder will reach a height of 5√3 ft.
Time Remaining56:19m:s When I have walked 20 % of the way to school, I have 1200 metres more to walk than when I have 20 % of the walk remaining. How far, in metres, is it from my home to my school?
Answer:
x = Total distance from your home to school = 1,500 meters
Step-by-step explanation:
Let
x = Total distance from your home to school
When you walked 20% of the way to school, you still have 1200 meters more to walk
Walked distance = 20% of x
= 20/100 * x
= 0.2 * x
= 0.2x
Total distance - walked distance = 1200 meters
x - 0.2x = 1200
0.8x = 1200
x = 1200 / 0.8
x = 1,500 meters
x = Total distance from your home to school = 1,500 meters
square the term in the parentheses? Please help
Answer:
There is no parenthesis here
Step-by-step explanation:
add the question or equation or problem next time
Maggie’s bank has assigned her a temporary 3-digit PIN to use with her ATM card. Each digit is a number from 1 to 5, inclusive, and no digit can be used more than once in the PIN. Which multiplication problem can be used to determine the probability that the PIN she was assigned was 123? (One-fifth) (one-fifth) (one-fifth) (One-fifth) (one-fourth) (one-third) (Four-fifths) (three-fourths) (two-thirds) (Four-fifths) (four-fifths) (four-fifths)
Answer:
Step-by-step explanation:
1/5* 1/4 * 1/3
I think it is the second one
one fifth
one fourth
one third
Answer:
b
Step-by-step explanation:
1/5 1/4 1/3 mark me me brainliest
A 2-column table with 5 rows titled Lou's Shoes. Column 1 is labeled Shoe with entries Sandals, sneakers, running shoes, boots, cleats. Column 2 is labeled Regular price (dollars) with entries x, 10, 12, 14, 16.
Lou’s Shoes is having its annual Flag Day Sale and is offering a 25% discount on all regularly priced shoes. Kayla spends $13.50 buying sandals and sneakers. Determine which equation represents how much Kayla will spend on sandals after the discount.
$13.50 = 0.75(x + 10)
$13.50 – 10 = 0.75x
$13.50 + 10 = 0.75x
$13.50 = 0.25(x + 10)
Answer: it's A
Step-by-step explanation: took the test
A. The function shown on the graph has a greater rate of change, but a lower starting point.
B. The function shown on the graph has a greater rate of change and a higher starting point.
C. The function shown on the graph has a smaller rate of change and a lower starting point.
D. The function shown on the graph has a smaller rate of change, but a higher starting point.
[tex]cos x -1=0[/tex]
Answer:
x=2[tex]\pi[/tex]n,for any integer n
Step-by-step explanation:
