Find the 90% confidence interval for the population standard deviation given the following.

n = 51, x = 11.49, s = 2.34 and the distribution is normal.

a. 1.92 < σ < 3.25
b. 2.01 < σ < 2.81
c. 1.37 < σ < 1.91
d. 10.28 < σ < 14.32

b. 2.01 < σ < 2.81

Step-by-step explanation:

The 90% confidence interval for the population standard deviation is calculated as:

   < σ <

Where n is equal to 51, s is equal to 2.34, is 10%, is the value for the Chi squared distribution with n-1 degrees of freedom that has a probability of in the right tail and is the value for the Chi squared distribution with n-1 degrees of freedom that has a probability of in the right tail.

So, replacing n by 51, s by 2.34, by 67.50 and by 34.76, we get that the The 90% confidence interval is equal to:

< σ <

2.01 < σ < 2.81

answer: 30

step-by-step explanation: its 30 because im a basketball player and stephen curry hits most of his shots so if you put 30 you might make the shot goodluck

i belive false if so your welcome if not well idk