No it is not, this is because .634 does not have a whole number
-5 + n is another way to write the expression.
Answer:
![\frac{ \sqrt[3]{x} }{9}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%20%5Csqrt%5B3%5D%7Bx%7D%20%20%7D%7B9%7D%20)
Quotient means the answer after dividing two numbers.
Answer:
95% Confidence interval for the variance:

95% Confidence interval for the standard deviation:

Step-by-step explanation:
We have to calculate a 95% confidence interval for the standard deviation σ and the variance σ².
The sample, of size n=8, has a standard deviation of s=2.89 miles.
Then, the variance of the sample is

The confidence interval for the variance is:

The critical values for the Chi-square distribution for a 95% confidence (α=0.05) interval are:

Then, the confidence interval can be calculated as:

If we calculate the square root for each bound we will have the confidence interval for the standard deviation:
