Question

Asked Nov 18, 2019

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A study of the effects of color on reducing anxiety compared anxiety test scores of participants who completed the test printed on either soft yellow paper or on harsh green paper. The scores for five participants who completed the test printed on the yellow paper were 17, 19, 28, 21, and 18. The scores for four participants who completed the test on the green paper were 20, 26, 17, and 24. Using the .05 level, one-tailed (predicting lower anxiety scores for the yellow paper), what should the researcher conclude?

Step 1

It is assumed that samples are drawn from the normal population. The population standard deviations are unknown. Thus, we can use t- test for difference in means.

The appropriate null and alternative hypotheses are stated below:

Step 2

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

- In Excel sheet, enter
**Yellow paper scores and Green paper scores**in different columns. - In
**Data**, select**Data Analysis**and Choose**t-Test: Two-Sample Assuming Unequal Variances**. - In
**Input Range**, select**Yellow paper scores time**and**Green paper scores,**and click**Labels in First Ro...**

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