1. A researcher wishes to see if there is a difference in thecholesterol levels

Question

1. A researcher wishes to see if there is a difference in thecholesterol levels of two groups of men. A random sample of30 men between the ages of 25 and 40 is selected and tested. Theaverage level is 223 with a standard deviation of 5.9. A secondsample of 25 men between the ages of 41 and 56 is selected andtested. The average level for this group is 229 with a standarddeviation of 6. The researcher conducted a hypothesis test at the5% level of significance to determine if there is a difference inthe cholesterol levels of two groups of men. A. Independent B. Dependent 1. A researcher wishes to see if there is a difference in thecholesterol levels of two groups of men. A random sample of30 men between the ages of 25 and 40 is selected and tested. Theaverage level is 223 with a standard deviation of 5.9. A secondsample of 25 men between the ages of 41 and 56 is selected andtested. The average level for this group is 229 with a standarddeviation of 6. The researcher conducted a hypothesis test at the5% level of significance to determine if there is a difference inthe cholesterol levels of two groups of men. A. Independent B. Dependent

Explanation / Answer

However you could decide a dependent test, for example if thesecond sample was the older brothers of the first.

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