The means and standard deviation of some subgroups of the sample are as shown in the following table:

Subgroup Mean Std. Dev N

Vegetarian 72.9 11.7 40
Non-vegetarians 73.5 11.4 43

Males 74.9 12.0 38
Females 71.8 11.0 45

Is there a significant difference in the mean diastolic blood pressures, at =.05, between

a. vegetarians and non-vegetarians?
b. males and females?

Question

The means and standard deviation of some subgroups of the sample are as shown in the following table:

Subgroup			Mean		Std. Dev	N

Vegetarian			72.9		11.7		40
Non-vegetarians		73.5		11.4		43

Males				74.9		12.0		38
Females			71.8		11.0		45

Is there a significant difference in the mean diastolic blood pressures, at  =.05, between

a. vegetarians and non-vegetarians?
b. males and females?