Question

please walk me step by step through this problem!

A popular magazine is conducting a study in order to rank each state according to the overall health of its citizens. One measure that is used is the mean number of times each citizen excercises per week. For the 85 citizens surveyed in State A, the mean exercise rate was 1.9 times per week. For the 91 people surveyed in State B, the mean exercise rate was 2.3 times per week. Assume that the population standard deviations of the citizens exercise rates are .5 times per week for State A, and 1.1 times per week for State B. Construct a 95% confidence interval for the true difference between the mean exercise rates for these two states.

please include the critical and lower and upper endpoints if possible.

thank you!

Answer 1