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A school district wants to know how many students in the district have peanut allergies. Use a 90% confidence interval to estimate the minimum number of students that need to be surveyed in order to yield results that are normally distributed with a standard deviation of 9 and a margin of error of ±0.8 students with peanut allergies. (Recall the following z-scores for each level of confidence: 90% 1.645, 95% = 1.960, and 99% = 2.575.) =

A school district wants to know how many students in the district have peanut allergies. Use a 90% confidence interval to estimate the minimum number of students that need to be surveyed in order to yield results that are normally distributed with a standard deviation of 9 and a margin of error of ±0.8 students with peanut allergies. (Recall the following z-scores for each level of confidence: 90% 1.645, 95% = 1.960, and 99% = 2.575.) =

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A school district wants to know how many students in the district have peanut allergies. Use a 90% confidence interval to estimate the minimum number of students that need to be surveyed in order to yield results that are normally distributed with a standard deviation of 9 and a margin of error of ±0.8 students with peanut allergies. (Recall the following z-scores for each level of confidence: 90% = 1.645, 95% = 1.960, and 99% = 2.575.)
Transcribed Image Text:A school district wants to know how many students in the district have peanut allergies. Use a 90% confidence interval to estimate the minimum number of students that need to be surveyed in order to yield results that are normally distributed with a standard deviation of 9 and a margin of error of ±0.8 students with peanut allergies. (Recall the following z-scores for each level of confidence: 90% = 1.645, 95% = 1.960, and 99% = 2.575.)
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