For each of the following situations, indicate whether H₀ should be retained or rejected.

a. z = -1.92, two-tailed test, α = .05

b. z = -1.92, one-tailed test, lower tail critical, α = .05

c. z = 2.45, two-tailed test, α = .05

d. z = 2.45, two-tailed test, α = .01

e. z = -3.25, one-tailed test, upper tail critical, α = .05

f. z = -1.77, one-tailed test, lower tailed critical, α = .05

g. z = 2.16, one-tailed test, upper tailed critical, α = .01