(Choose 1 answer)
The mean water temperature downstream from a power plant cooling tower discharge pipe should be no more than 100 F. Past experience has indicated that the standard deviation of temperature is 2 F. The water temperature is measured on nine randomly chosen days, and the average temperature is found to be 98 F.Find the test statistic for this test.
A. -3
B. 3
C. 2
D. -2
E. None of the other choices is correct
