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A medical researcher wants to compare the pulse rates of smokers and non-smokers. He believes that...
A medical researcher wants to compare the pulse rates of smokers and non-smokers. He believes that the pulse rate for smokers and non-smokers is different and wants to test this claim at the 0.05 level of significance. A sample of 33 smokers has a mean pulse rate of 90 and a standard deviation of 5, and a sample of 50 non-smokers has a mean pulse rate of 86 with a standard deviation of 6. What conclusion should the researcher claim? DO NOT pool the variances. The population variances should be considered the same
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