Judging from recent experience, 5% of the worm gears produced by an automatic, high-speed machine are defective. What is the probability that out of six gears selected at random, exactly zero gears will be defective?

If the alternative hypothesis states that: H1: 1 < 2 What is the rejection region (Reject Ho) for the hypothesis test?

If the alternative hypothesis states that: H1: 1 < 2 What is the rejection region (Reject Ho) for the hypothesis test?

		Both tails
		Left tail
		Right tail
		Center
		None of the above

Both tails

Left tail

Right tail

Center

None of the above

0.001

0.167

0.735

0.500

None of the above

The distribution of a sample of the outside diameters of PVC gas pipes approximates a normal distribution. The mean is 14.0 inches and the standard deviation is 0.1 inches. About 68.26% of the outside diameters lie between what two amounts?

		13.5 and 14.5
		13.0 and 15.0
		13.9 and 14.1
		13.8 and 14.2
		None of the above