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.

Solution: The 99% confidence interval for the population standard deviation is given below:

σ

σ

σ

Step-by-step explanation:

The confidence interval for population standard deviation is given by :-

Given : n = 16

Standard deviation : s = 3.2

Significance level :

Critical values by using chi-square distribution table :-

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

Hence,  a 99% confidence interval for the population standard deviation :

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.

a

step-by-step explanation: