Question

In the following studies, state whether you would use a one sample t test, an independent...

  1. In the following studies, state whether you would use a one sample t test, an independent sample t test or a paired sample t test.
    1. A study examining whether there were differences in exercise preference between men and women.
    2. A blind taste test to determine preference of Pepsi vs Coca Cola.
    3. A study to determine if a class of middle school aged children had higher than normal BMI’s (normal = 25)
    4. A study to determine if IV Tylenol was more effective than IV Morphine in the first 24 hours post hysterectomy.

Researchers were interested in determining whether there was a difference in crime rates in areas where there is high youth unemployment vs low youth unemployment. Alpha (level of significance) was set at .05.

  1. State the null and alternate hypotheses.
  2. What is the independent variable?
  3. What is the dependent variable?
  4. Complete the table below:

Low Youth Unemployment

High Youth Unemployment

Sample Size

Sample Mean

Sample Standard Deviation

Estimated Standard Error

Group Statistics

High Youth Unemployment

N

Mean

Std. Deviation

Crime rate (number of offences per million population)

0 No

32

108.4063

27.32246

1 Yes

15

90.8667

29.42049

Group Statistics

High Youth Unemployment

Std. Error Mean

Crime rate (number of offences per million population)

0 No

4.82997

1 Yes

7.59634

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