SECTION B MULTIPLE CHOICE QUESTIONS
Question 1.
Marks: 35
The maximum amount of air that a person can exhale in one breath is called their Vital
Capacity (VC). Two samples, one of 13 men and one of 11 women, were taken from the same
group of applicants. The following results were obtained:
Sample Men Women
$\bar{x}$ 3,61 2,79
s 0,57 0,74
Calculate the 99% confidence interval for the mean VC for the population of men.
The answer rounded to 2 decimal places is:
(1A) [3,34; 3,90]
(1E) [2,54; 4,72]
(1B) [3,13; 4,09]
(1C) [2,94; 4,30]
(1D) [2,74; 4,51]
Question 2.
Referring to Question 1, Section B above, calculate the 95% confidence interval for the
standard deviation of the population of women.
The answer rounded to 3 decimal places is:
(2A) [0,472; 1,614] (2B) [0,496; 1,453] (2C) [0,517; 1,298] (2D) [0,552; 1,128]
(2E) [0,561; 1,089]