33. Twenty-five men between the ages of 25 and 30, who were participating in a wellknown heart study carried out in Framingham, Massachusetts, were randomly selected. Of these, 11 were smokers and 14 were not. The following data refer to readings of their systolic blood pressure.

Use these data to test the hypothesis that the mean blood pressures of smokers and nonsmokers are the same.

Transcribed Image Text:

Smokers Nonsmokers 124 130 134 122 136 128 125 129 133 118 127 122 135 116 131 127 133 135 125 120 118 122 120 115 123