Question

The test statistic of z=2.48 is obtained when testing the claim that p > 0.7.

Answer 1

Answer:

a)  Right-tailed test

b) 0.006569

c) We reject $H_0$.

Step-by-step explanation:

We are given the following information in the question:

$z_{\text{statistic}} = 2.48$

We are testing the claim  that p > 0.7

Alpha, α = 0.05

a) We have to identify type of test.

Since we test for claim p > 0.7, it is a one-tailed(right) test.

b) The p-value can be calculated with the help of standard normal table.

$P(z>2.48) = 1 - P(z$

C) Since the p-value is less than the significance level, we fail to accept the null hypothesis and reject the null hypothesis.

Thus, we reject $H_0$.