A magazine includes a report on the prices of subcompact digital cameras. The article ...

A magazine includes a report on the prices of subcompact digital cameras. The article states that 11 randomly selected subcompact digital cameras have a sample standard deviation of $109. Use an 80% level of confidence.

A. Construct an 80% confidence interval for the population variance

B. Construct an 80% confidence interval for the population standard deviation

C. Interpret your results