A) What is the alternative hypothesis? a. The population mean is equal to 7.2 points. b. The population mean is greater than 7.2 points. c. The population mean is smaller than 7.2 points. B) What Z-score(s) corresponds to the alpha level? In other words, at what point(s) would we reject the null hypothesis? C) What is the test statistic?

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A) What is the alternative hypothesis?

a. The population mean is equal to 7.2 points.

b. The population mean is greater than 7.2 points.

c. The population mean is smaller than 7.2 points.

B) What Z-score(s) corresponds to the alpha level? In other words, at what point(s) would we reject the null hypothesis?

C) What is the test statistic?

A researcher wants to know if a treatment significantly
increases the well being of someone with depression. The
average person with depression scores a 7.2 on a well being
scale with a SD of 1.4 points. The researcher administers the
treatment to 25 clients for a month and finds their well being at
the end to be 7.7. Assume an alpha level of .05.
Transcribed Image Text:A researcher wants to know if a treatment significantly increases the well being of someone with depression. The average person with depression scores a 7.2 on a well being scale with a SD of 1.4 points. The researcher administers the treatment to 25 clients for a month and finds their well being at the end to be 7.7. Assume an alpha level of .05.
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