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pu want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on revious study, you believe the population standard deviation is approximately o = 31.2 dollars. You vould like to be 90% confident that your estimate is within 2.5 dollar(s) of average spending on the pirthday parties. How many moms do you have to sample? Do not round mid-calculation. Try this with your statistics calculator, if you increases the confidence level, the sample size O increases O decreases If you decreases the error bound, the sample size O increases O decreases

pu want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on revious study, you believe the population standard deviation is approximately o = 31.2 dollars. You vould like to be 90% confident that your estimate is within 2.5 dollar(s) of average spending on the pirthday parties. How many moms do you have to sample? Do not round mid-calculation. Try this with your statistics calculator, if you increases the confidence level, the sample size O increases O decreases If you decreases the error bound, the sample size O increases O decreases

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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pu want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on revious study, you believe the population standard deviation is approximately o = 31.2 dollars. You would like to be 90% confident that your estimate is within 2.5 dollar(s) of average spending on the pirthday parties. How many moms do you have to sample? Do not round mid-calculation. Try this with your statistics calculator, if you increases the confidence level, the sample size O increases O decreases If you decreases the error bound, the sample size O increases O decreases
Transcribed Image Text:pu want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on revious study, you believe the population standard deviation is approximately o = 31.2 dollars. You would like to be 90% confident that your estimate is within 2.5 dollar(s) of average spending on the pirthday parties. How many moms do you have to sample? Do not round mid-calculation. Try this with your statistics calculator, if you increases the confidence level, the sample size O increases O decreases If you decreases the error bound, the sample size O increases O decreases
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