An energy company wants to choose between two regions in the state to install energy producing wind turbines. A researcher claims that the wind in region a is less than the wind speed in region be. To test the regions, The average wind speed is calculated for 90 days in each region. The mean wind speed in region a is 13.7 mph. Assume the population standard deviation is 2.9 mph. The mean wind speed in region beer is 15.3 mph. Assume the population standard deviation is 3.1 mph. At a=.05, can the company support the researchers claim? What is the claim? Find the critical values in the televise the rejection region Zo=? What is the rejection region? Select the correct choice below and fill in the boxes with your choice Find the standardized test statistic Z Z=