Kizspy | Question: 69 (Choose 1 answer)
An entrepreneur is considering the purchase of a coin-operated laundry. The current owner claims that over the past 15 years, the mean daily revenue was $750. A sample of 30 days reveals a daily mean revenue of $725 and standard deviation is $20. If you want to test the null hypothesis that the daily mean revenue was $750, what is the test statistic value?
A. 6.85
B. -6.85
C. -4.84
D. 4.84
E. None of the other choices is correct.
