A test of the null hypothesis H0 : µ = µ0 gives a test statistic z = -2.21.
(a) What is the p-value if the alternative is HA : µ > µ0?
(b) What is the p-value if the alternative is HA :µ < µ0?
(c) What is the p-value if the alternative is HA : µ does not = µ0?