A local courier service advertises that its average delivery time is less than 6 hours for local deliveries. When testing the two hypotheses, H0: μ ≥ 6 and HA: μ < 6, μ stand for ________.
A) the mean delivery time
B) the standard deviation of the delivery time
C) the number of deliveries that took less than 6 hours
D) the proportion of deliveries that took less than 6 hours
Correct Answer:
Verified
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