andom sample of size n = 50 people. From these data, the average chemical content of da ntake x= 750 grams/day, with a standard deviation, s = 35 grams/day. Question a) Determine the 95% confidence interval estimate for the average chemical content of the actu food ) If we consider the standard deviation of the actual chemical content (population) of food grams/day; How large a sample is needed if you want to believe that the 90% estimator of th sample mean does not exceed 5 grams/day difference from the true mean? = 30
andom sample of size n = 50 people. From these data, the average chemical content of da ntake x= 750 grams/day, with a standard deviation, s = 35 grams/day. Question a) Determine the 95% confidence interval estimate for the average chemical content of the actu food ) If we consider the standard deviation of the actual chemical content (population) of food grams/day; How large a sample is needed if you want to believe that the 90% estimator of th sample mean does not exceed 5 grams/day difference from the true mean? = 30
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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
Transcribed Image Text:A researcher is interested in knowing the chemical content in food. For this purpose he took a
random sample of size n = 50 people. From these data, the average chemical content of daily
intake x= 750 grams/day, with a standard deviation, s = 35 grams/day.
Question
a) Determine the 95% confidence interval estimate for the average chemical content of the actual
food
b) If we consider the standard deviation of the actual chemical content (population) of food = 30
grams/day; How large a sample is needed if you want to believe that the 90% estimator of the
sample mean does not exceed 5 grams/day difference from the true mean?
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