Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Lumber Cutter Your lumber company has bought a machine that automatically cuts lumber. The seller of the machine claims that the machine cuts lumber to a mean length of 8 feet (96 inches) with a standard deviation of 0.5 inch. Assume the lengths are normally distributed. You randomly select 40 boards and find that the mean length is 96.25 inches. * Assuming that the seller's claim is correct, what is the probability the mean of the sample is 96.25 inches or more? _____ * Using your answer from question 1, what do you think of the seller's claim? _____ * Would it be unusual to have an individual board with a length of 96.25 inches? Why or why not? _____
Right answer summary: part 1: 0.000783; part 2: *:; part 3: *:
Question state: todo