8. The times for untrained rats to run a standard maze has a N (65, 15) distribution where the times are measured in seconds. The researchers hope to show that training improves the times. The alternative hypothesis is a. Ha: µ > 65. b. Ha: > 65. c. Ha: µ < 65.

8. The times for untrained rats to run a standard maze has a N (65, 15) distribution where the times are measured in seconds. The researchers hope to show that training improves the times. The alternative hypothesis is
a. Ha: µ > 65.
b. Ha: > 65.
c. Ha: µ < 65.

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