Multiple Choice
An entrepreneur is considering the purchase of a coin-operated laundry. The current owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75. A sample of 30 days reveals a daily average revenue of $625 and a standard deviation of $70. Which of the following tests will be the most appropriate?
A) t test for mean
B) Z test for proportion
C) pooled-variance t test
D) separate-variance t test
Correct Answer:
Verified
Correct Answer:
Verified
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