Answer
Answer: C
a = .1 and not at a = .05
Work Step by Step
The p-value is the probability of obtaining a value more extreme or equal to test statistic z. We can use table A to determine this p-value.
P = P(z $\leq$ -1.46) = .0721
If the P value is smaller than the significance level, the null hypothesis is rejected and the result is statistically significant.