Question 642865: Hi. I'm having trouble with a statistics question. I want to verify that the answer I got is correct.
Question: A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness for women and for men. Using = .05, what is the value the test statistic?
Women Men
Sample size 50 /80
Mean effect 7 /6.95
Sample standard deviation 3 /4
Possible Answers:A. t = 3.252 B. z = 0.455 C. z = 0.081 D. z = 0.151
I got C as my answer. Is this correct?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Question: A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness for women and for men.
Using = .05, what is the value the test statistic?
Women Men
Sample size 50 /80
Mean effect 7 /6.95
Sample standard deviation 3 /4
Possible Answers:A. t = 3.252 B. z = 0.455 C. z = 0.081 D. z = 0.151
I got C as my answer. Is this correct?
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Using a TI-84
I get t = 0.0811 when I run a 2-SampleTtest
I get z = 0.0228 when I run a 2-SampleZtest
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Cheers,
Stan h.
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