Consider the following hypothesis test H0 20 Ha p doesnt eq

Consider the following hypothesis test:

H0 = .20

Ha= p doesnt equal .20

A sample of 400 provided a sample proportion =.175

a. Compute the value of the test statistic (to 2 decimals)

b. what is the p-value?

c. using alpha = .05, what is the critical value of the test statistic (+ or -)