The manager of the Danvers-Hilton Resort Hotel stated that the mean guest bill for a weekend is $600 or less. A member of the hotel's accounting staff noticed that the total charges for guest bills...

The manager of the Danvers-Hilton Resort Hotel stated that the mean
guest bill for a weekend is $600 or less. A member of the hotel's
accounting staff noticed that the total charges for guest bills have been
increasing in recent months. The accountant will use a sample of future
weekend guest bills to test the manager's claim.

a. Which form of the hypotheses should be used to test the
manager's claim? Explain.
H_o: µ ≥ 600 H_o: µ ≤ 600 H_o: µ = 600

H_a: µ < 600="">_a: µ > 600 H_a: µ ≠ 600
b. What conclusion is appropriate when H_o
cannot be rejected?
c. What conclusion is appropriate when H_o
can be rejected?