question archive Pulse rates for a random sample of 26 smokers had a mean of 80 and a standard deviation of 5
Pulse rates for a random sample of 26 smokers had a mean of 80 and a standard deviation of 5
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Pulse rates for a random sample of 26 smokers had a mean of 80 and a standard deviation of 5. Among 32 randomly chosen nonsmokers, the mean was 74 with the standard deviation 6. Both sets of data are roughly symmetric and had no outliers. Is there evidence that smokers (S) have higher pulse rates than nonsmokers (NS)? Test the hypothesis
