Minitab Express was used to conduct the following single sample proportion z test.

Descriptive StatisticsNEventSample p40250.625

Test

H0: p=0.5

Ha: p>0.5

Z-ValueP-Value1.580.0569

At the 0.05 alpha level, this test was not statistically significant.

Which of the following changes would lead to asmaller p value? Assume all other factors are held constant.

a. Change the alpha value to 0.01

b. Changing the parameter in the null hypothesis to p = 0.625

c. Increasing the sample size to n=400