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Illustration 20.3. The mean weekly sale of the Yum Yum choco- late bar in a chain of candy stores was 146.3 bars per store. After an advertising campaign the mean weekly sales in 22 stores for a typi- cal week increased to 153.7 and showed a standard deviation of 17.2. Is the evidence conclusive that the advertising was successful? You• are given that for 21 degrees of freedom, the value of t is 2.08 at 5% level of significance.

Illustration 20.3. The mean weekly sale of the Yum Yum choco- late bar in a chain of candy stores was 146.3 bars per store. After an advertising campaign the mean weekly sales in 22 stores for a typi- cal week increased to 153.7 and showed a standard deviation of 17.2. Is the evidence conclusive that the advertising was successful? You• are given that for 21 degrees of freedom, the value of t is 2.08 at 5% level of significance.

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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Illustration 20.3. The mean weekly sale of the Yum Yum choco- late bar in a chain of candy stores was 146.3 bars per store. After an advertising campaign the mean weekly sales in 22 stores for a typi- cal week increased to 153.7 and showed a standard deviation of 17.2. Is the evidence conclusive that the advertising was successful? You are given that for 21 degrees of freedom, the value of t is 2.08 at 5% level of significance.
Transcribed Image Text:Illustration 20.3. The mean weekly sale of the Yum Yum choco- late bar in a chain of candy stores was 146.3 bars per store. After an advertising campaign the mean weekly sales in 22 stores for a typi- cal week increased to 153.7 and showed a standard deviation of 17.2. Is the evidence conclusive that the advertising was successful? You are given that for 21 degrees of freedom, the value of t is 2.08 at 5% level of significance.
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