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?

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Asked Nov 17, 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?

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Expert Answer

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Step 1

The sample mean and variance of yellow papers can be calculated using Excel.

  • Enter test score on the yellow paper into Excel.
  • Enter = AVERAE (A2:A6) to get the mean as 6.
  • Enter = VAR.S. (A2:A6) to obtain the variance as 3.
That is,
20.6 and s, =19.3
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That is, 20.6 and s, =19.3

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Step 2

The sample mean and variance of green papers can be calculated using Excel.

  • Enter test score on the green paper into Excel.
  • Enter = AVERAE (A2:A6) to get the mean as 75.
  • Enter = VAR.S. (A2:A6) to obtain the variance as 25.
21.75 and s
=16.25
That is,
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21.75 and s =16.25 That is,

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Step 3

The null and alternative hypot...

Ho 4142
Наи
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Ho 4142 Наи

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