The mean length of lumber ordered is supposed to be 9.0 ft. A builder wants to check whether the shipment of lumber he receives has a mean length different from 9.0 feet. The builder observes the sample mean of 61 pieces of lumber is 8.8 feet with a sample standard deviation of 1.1 feet. Use a significance level of = 0.05 to test the claim that this sample of lumber comes from a population with a mean equal to 9.0 feet. Use this information to answer parts a) - f). a) State the hypotheses and label the claim. (1 point) b) State the significance level (). ____________ c) Is the test left-tailed, right-tailed, or two-tailed (circle one)? d) What is the critical value(s)?

e) What is the P-value and test-statistic? f) State the conclusion.