Doiscuss the below problem:
Q: Dr. Z at the Clinic wishes to see whether the pulse rates of smokers are higher than the pulse rates of nonsmokers. Samples of 100 smokers and 100 nonsmokers are selected. The results are shown here. Can Dr. Z conclude, at alpha = 0.05, that the smokers have higher pulse rates than nonsmokers? Assume the samples come from a normal population.
Smokers
Sample mean = 90
Standard deviation = 5
Sample size = 100
Nonsmokers
Sample mean = 88
Standard deviation = 6
Sample size = 100
State the hypothesis:
Find the critical value:
Identify and Compute the test value:
Make a decision:
Interpret the results within the context of the problem: