The annual earnings of 13 randomly selected computer software engineers have a sample standard deviation of $ 3648 . Assume the sample is from a normally distributed population. Construct a confidence...


The annual earnings of


13


randomly selected computer software engineers have a sample standard deviation of


$ 3648

.

Assume the sample is from a normally distributed population. Construct a confidence interval for the population variance


sigma squared


and the population standard deviation


sigma

.

Use a


95 %





level of confidence. Interpret the results.





What is the confidence interval for the population variance
sigma squared




​?


What is the confidence interval for the population standard deviation


sigma

​?



Jun 04, 2022
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