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Compute the value of the test statistic. Round your answer to three decimal places. Step 3 of 3: Draw a conclusion and interpret the decision.

Compute the value of the test statistic. Round your answer to three decimal places. Step 3 of 3: Draw a conclusion and interpret the decision.

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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Step 2 of 3:

Compute the value of the test statistic. Round your answer to three decimal places.

Step 3 of 3:

Draw a conclusion and interpret the decision.

It currently takes users a mean of 9 minutes to install the most popular computer program made by RodeTech, a software design company. After changes have been made to the program, the company executives want to know if the new mean is now different from 9 minutes so that they can change their advertising accordingly. A simple random sample of 71 new customers are asked to time how long it takes for them to install the software. The sample mean is 9.3 minutes with a standard deviation of 1.2 minutes. Perform a hypothesis test at the 0.05 level of significance to see if the mean installation time has changed. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. Answer E Tables Keypad Keyboard Shortcuts
Transcribed Image Text:It currently takes users a mean of 9 minutes to install the most popular computer program made by RodeTech, a software design company. After changes have been made to the program, the company executives want to know if the new mean is now different from 9 minutes so that they can change their advertising accordingly. A simple random sample of 71 new customers are asked to time how long it takes for them to install the software. The sample mean is 9.3 minutes with a standard deviation of 1.2 minutes. Perform a hypothesis test at the 0.05 level of significance to see if the mean installation time has changed. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. Answer E Tables Keypad Keyboard Shortcuts
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