Exemple 7: What is would the confidence interval for the population and for the standard deviation would be?

The annual earnings of 13 randomly selected computer software engineers have a sample standard deviation of $3631. Assume the sample is from a normally distributed population. Constru confidence interval for the population variance of and the population standard deviation o. Use a 90% level of confidence. Interpret the results 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 ) O A. With 90% confidence, you can say that the population variance is greater than O B. With 90% confidence, you can say that the population variance is between and O c. With 10% confidence, you can say that the population variance is less than O D. With 10% confidence, you can say that the population variance is between and