1. A Biologist suspected that males 20 - 24 have a higher mean systolic blood pressure than females in the same age group. Independent random samples of males and females were selected from the Heart Center. The data are as follows:

n mean std. dev.

Males 52 125 13.9

Females 60 117 12.1

At a 1% level of significance, is there sufficient evidence to justify the suspicions of the biologist?

a. Formulate the hypotheses

b. Set the level of significance

c. Determine the test statistics

d. Determine the Critical /Tabular value using the degree of freedom.

e. Compute the statistical treatment

f. Make a decision