The manufacturer of an airport baggage scanning machine claims it can handle an average of 560 bags per hour.

(a1)	At = .05 in a left-tailed test, would a sample of 16 randomly chosen hours with a mean of 538 and a standard deviation of 50 indicate that the manufacturers claim is overstated? Choose the appropriate hypothesis.

a.	H1: < 560. Reject H1 if tcalc > -1.753
b.	H0: < 560. Reject H0 if tcalc > -1.753
c.	H1: 560. Reject H1 if tcalc < -1.753
d.	H0: 560. Reject H0 if tcalc < -1.753

(a-2	State the conclusion.

a.	tcalc = -1.760. There is significant evidence to reject the manufacturers claim.
b.	tcalc = -1.760. There is not enough evidence to reject the manufacturers claim.