You wish to test the following claim at a significance level of=0.05

H0:p=0.72

H1:p0.72

You obtain a sample of size 420 in which there are 280 successful observations.

What is the test statistic for this sample? (Report answer accurate to 2 decimal places but do not round in the middle of your calculations.)

What is the p-value for this sample? (Report answer accurate to 4 decimal places.)

This test statistic leads to a decision to

• reject the null
• accept the null
• fail to reject the null

As such, the final conclusion is that

• there is sufficient evidence to conclude that the population proportion is not equal to 0.72.
• there is not sufficient evidence to conclude that the population proportion is not equal to 0.72.
• there is sufficient evidence to conclude that the population proportion is equal to 0.72.
• there is not sufficient evidence to conclude that the population proportion is equal to 0.72.