2. The head of a school clinic in a certain elementary school wants to estimate the mean height (in centimeters) of all Grade 6 pupils. She wants to be 95% confident that the estimate of mean is accurate within 4 cm. From the previous study, the standard deviation of the heights of the target population was 30 cm. What is the sample size does she need?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
icon
Related questions
Question
2. The head of a school clinic in a certain elementary school wants to estimate the mean
height (in centimeters) of all Grade 6 pupils. She wants to be 95% confident that the
estimate of mean is accurate within 4 cm. From the previous study, the standard
deviation of the heights of the target population was 30 cm. What is the sample size
does she need?
Answer:
n=217
Just show solution on how to get that
answer.
Transcribed Image Text:2. The head of a school clinic in a certain elementary school wants to estimate the mean height (in centimeters) of all Grade 6 pupils. She wants to be 95% confident that the estimate of mean is accurate within 4 cm. From the previous study, the standard deviation of the heights of the target population was 30 cm. What is the sample size does she need? Answer: n=217 Just show solution on how to get that answer.
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill