Reference no: EM132849055

X Record.Number Age Sex Aer Smk Caf Pr Rct Starting_Sal HRs.per.week Major

1 1            1 20  1  1  2  1 72 125       38723          58  FIN

2 2            2 18  1  2  2  2 80 150       40407          62  FIN

3 3            3 21  1  1  2  2 60 100       39988          55  FIN

4 4            4 18  1  2  2  2 60 160       40166          61 ACCT

5 5            5 18  1  1  2  2 53 150       39580          58 ACCT

6 6            6 18  1  1  2  2 81 140       39982          57 ACCT

1. Test the hypothesis than men smoke more than women at the α = 0.10 level.
2. Provide and interpret a 95% confidence interval for the difference in hours worked per week for those who consume caffeine and those who don't.
3. Provide and interpret a 97% confidence interval for the difference in average reaction time between men and women.
4. Test the hypothesis that smokers have a lower average pulse rate than non smokers.
5.  Provide and interpret a 90% confidence interval for the difference in proportion of men who consume caffeine vs. women who consume caffeine.
6. Test the hypothesis that women have a lower starting salary than men.