6. (A)Calculate and show the 95% confidence interval for males and females separately. What impact are the different means having on the intervals and what impact are the different standard deviations having?

Females: 43 48 54 55 33 48 62 68 54 61

Males: 62 75 54 59 21 22 50 59 62 38

B)Calculate the 90% and 95% confidence intervals of the following data set assuming this is sample data. Describe your process as well as the difference in the intervals.

5 6 3 3 4 2 7 8 9 2 5 4 3 11 21 31 22 27 28 14

(C)Why are sample and population confidence intervals calculated differently?