3. A test statistic $z = -2.15$ is obtained when testing the claim $p < 0.67$.
a.) Identify the type of hypothesis test; left-tailed, two-tailed, or right-tailed.
b.) Using a significance level of $\alpha = 0.10$, find the critical value(s).
c.) Should the null hypothesis, $H_0$, be rejected or should it fail to be rejected?
a.)
b.)
c.)