#14

Homework: Section 6.4 Confidence Intervals for Question 14, 6.4.21-T HW Score: 59.09%, 13 of 22 points Save Variance and Part 3 of 4 O Points: 0 of 1 The annual earnings of 12 randomly selected computer software engineers have a sample standard deviation of $3640. Assume the sample is from a normally distributed population. Construct a confidence interval for the population variance o and the population standard deviation o. Use a 95% level of confidence. Interpret the results. What is the confidence interval for the population variance a"? (6648963 , 38195811 ) (Round to the nearest integer as needed.) Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to the nearest integer as needed.) A. With 95% confidence, you can say that the population variance is less than B. With 95% confidence, you can say that the population variance is between 6648963 and 38195811. O C. With 5% confidence, you can say that the population variance is greater than O D. With 5% confidence, you can say that the population variance is between and What is the confidence interval for the population standard deviation a? (Round to the nearest integer as needed.)