Statement of a problem № m40126


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. Assume the sample is from a normally distributed population and construct the indicated confidence intervals for (a) The population variance σ2 (b) The population standard deviation σ. Interpret the results.

New search. (Also 1294 free access solutions)

Online calculators