Some questions in Part A require that you access data from Statistics for People Who (Think They) Hate Statistics. This data is available on the student website under the Student Text Resources link.
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Get Help NowPractice the following problems by hand just to see if you can get the numbers right. Using the following information, calculate the t test statistic.
Using the results you got from Question 1 and a level of significance at .05, what are the two-tailed critical values associated with each? Would the null hypothesis be rejected?
In the following examples, indicate whether you would perform a t test of independent means or dependent means.
Two groups were exposed to different treatment levels for ankle sprains. Which treatment was most effective?
A researcher in nursing wanted to know if the recovery of patients was quicker when some received additional in-home care whereas when others received the standard amount.
A group of adolescent boys was offered interpersonal skills counseling and then tested in September and May to see if there was any impact on family harmony.
One group of adult men was given instructions in reducing their high blood pressure whereas another was not given any instructions.
One group of men was provided access to an exercise program and tested two times over a 6-month period for heart health.
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