10 pts Question 8 A civil engineering firm claims that the true mean of height of a certain class of buildings is higher than 900 feet. A sample of 16 buildings in that class are analyzed and have a mean of 920 feet with a standard deviation of 70 feet. Test the claim using the rejection region approach. a) State the hypotheses b) State and describe the rejection criteria c) Calculate the Z value d) State the conclusion and why e) Is there evidence to support the claim