MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Estimation
A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.
Question

A machine in the student lounge dispenses hot chocolate. The average cup of hot chocolate is supposed to contain 7 oz with a standard deviation of 0.25 oz. Eight cups of hot chocolate from this machine show the average content to be 7.3 oz.

 

a. Do you think the machine has slipped out of adjustment and the average amount of hot chocolate per cup is different from 7 oz? What is the pvalue for your test?

 

b. What sample size would you need to be 95% confident with a margin of error of 0.05?

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