Question

Asked Nov 27, 2019

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Number 15

Step 1

The hypotheses appropriate for the test are as follows:

*H _{0}: µ*

*H _{1}: µ*

In this case, the appropriate test is paired t test,

The test statistic is *t *which is calculated as,

Step 2

where *d*-bar is the mean of the differences, µd0 is the hypothesized mean difference, *sd*-bar is the standard deviation of the differences.

Step-by-step procedure to obtain the test statistic and critical value using Excel software:

- In Excel sheet, enter
**White Background and Red Background**in different columns. - In
**Data**, select**Data Analysis**and Choose**t-Test: Paired Two Sample for Means**. - In
**Variable 1 Range**, select**White Background**and**in Variable 2 Ra...**

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