Statistical tests can be used to determine a particular characteristic of two groups. In other words, are the two groups different, and is the difference more than just by chance alone. The t-test and Mann-Whitney U test are used to analyze group data. Which test will you use for the following research question? Explain in detail why you chose one test instead of the other.

Do sleeping problems affect the health-related quality of life of elderly clients with chronic heart failure? The two groups are elderly clients with sleeping problems and elderly clients without sleeping problems.


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