A random sample of 22 women participated in a study testing whether a new banana boat sunscreen reduced their incident rate of sunburn during the summer. The average woman in the study reported getting burned 5.7 times over the past 3 months, with a SS = 179. Compare this incident rate to a rate of 7 times per 3 months. Use an alpha of .05, 2 tailed test. a) What is the t-critical value(s)? b) What is the estimated standard error?c) Compute the t-statistic.d) Make a decision regarding the null and provide a conclusion (explain what it means in regards to this particular study).

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6th Edition

ISBN:9781119256830

Author:Amos Gilat

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Chapter1: Starting With Matlab

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Problem 1P

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A random sample of 22 women participated in a study testing whether a new banana boat sunscreen reduced their incident rate of sunburn during the summer. The average woman in the study reported getting burned 5.7 times over the past 3 months, with a SS = 179. Compare this incident rate to a rate of 7 times per 3 months. Use an alpha of .05, 2 tailed test.

a) What is the t-critical value(s)?

b) What is the estimated standard error?

c) Compute the t-statistic.

d) Make a decision regarding the null and provide a conclusion (explain what it means in regards to this particular study).

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