Assume that the heights of men are normally distributed. a random sample of 16 men have a mean height of 67.5 inches and a standard deviation of 3.2 inches. construct a 99% confidence interval for the population standard deviation, σ. (2.2, 5.4) (2.2, 6.0) (1.2, 3.2) (2.2, 5.8)

(2.2, 5.8)

Step-by-step explanation:

The confidence interval for standard deviation is given by :-

Given :  Sample size : 16

Mean height : inches

Standard deviation : inches

Significance level :

Using Chi-square distribution table ,

Then , the 99% confidence interval for the population standard deviation is given by :-

so, converting firstly the mixed fractions to improper fractions and then "adding".

answer: a

step-by-step explanation: the answer is a due to the rule of symmetry; that a line of symmetry must divide a figure into 2 pieces that are the exact same, only reflected over a line of symmetry. b and c do not have lines of symmetry and would not divide the figure evenly, thus making the answer a.