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Ms. Berry is concerned about the average amount of food Fred, the elephant, eats each day. Zookeeper Mr. Johnson claims that the amount of food Fred eats daily is normally distributed with a population mean of 150 pounds and population standard deviation of 20 pounds. Ms. Berry takes a sample of 25 days and determines that the average amount of food Fred ate was 160 pounds.  a. Assuming Mr. Johnson is correct, what is the probability that a sample of 25 days will have Fred eating an average of 160 pounds of food or more?  b. Given your answer in part a should Ms. Berry be concerned that Fred is overeating?

Ms. Berry is concerned about the average amount of food Fred, the elephant, eats each day. Zookeeper Mr. Johnson claims that the amount of food Fred eats daily is normally distributed with a population mean of 150 pounds and population standard deviation of 20 pounds. Ms. Berry takes a sample of 25 days and determines that the average amount of food Fred ate was 160 pounds.  a. Assuming Mr. Johnson is correct, what is the probability that a sample of 25 days will have Fred eating an average of 160 pounds of food or more?  b. Given your answer in part a should Ms. Berry be concerned that Fred is overeating?

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
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Ms. Berry is concerned about the average amount of food Fred, the elephant, eats each day. Zookeeper Mr. Johnson claims that the amount of food Fred eats daily is normally distributed with a population mean of 150 pounds and population standard deviation of 20 pounds. Ms. Berry takes a sample of 25 days and determines that the average amount of food Fred ate was 160 pounds. 

a. Assuming Mr. Johnson is correct, what is the probability that a sample of 25 days will have Fred eating an average of 160 pounds of food or more? 

b. Given your answer in part a should Ms. Berry be concerned that Fred is overeating? 

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