Stats homework please help

Question

(a) You are conducting a study to see if the proportion of voters who prefer Candidate A is significantly different from 60%. With H_a : p 60% you obtain a test statistic of . Find the p-value accurate to 4 decimal places.

Answer 1

Since it is two-sided the p-value is P(|z| > 1.7) or P(z > 1.7) + P(z < -1.7). Since the normal distribution is symmetric, the p-value is 2 * P(z < -1.7) = 2 * 0.0446 = 0.0892.