A nutritionist argues that the mean Diastolic pressure of vegetarian people is lower than non-vegetarians and that they should be looked at separately for better health control. Another person argues that the mean Diastolic pressure of vegetarians is higher than that of non-vegetarians and agrees they should be looked at separately. Perform a hypothesis test at the 5% significance level to test if the mean Diastolic pressure of the vegetarian and non-vegetarian differ?