Patient satisfaction (sample mean of 48.8). In Exercise 9.3, you tested H0 : = 50 based

Patient satisfaction (sample mean of 48.8). In Exercise 9.3, you tested H0

: μ = 50 based on a sample of n = 36 showing = 48.8. The population had standard deviation σ = 7.5.

(a) What is the one-sided alternative hypothesis for this test?

(b) Calculate the z-statistic for the test.

(c) Convert the zstat to a P-value, and interpret the results.