Question

The p-value for a one-sided t-test is 0. 10. If the test had been two-sided, what would the p-value have been?.

Answer 1

Considering the one-sided p-value, the p-value for a two-sided test would be of 0.20.

How to find the p-value of a test?

It depends on the test statistic z, as follows:

• For a left-tailed test, it is the area under the normal curve to the left of z, which is the p-value of z.

• For a right-tailed test, it is the area under the normal curve to the right of z, which is 1 subtracted by the p-value of z.

• For a two-tailed test, it is the area under the normal curve to the left of -z combined with the area to the right of z, hence it is 2 multiplied by 1 subtracted by the p-value of z, which means that the p-value for a two-tailed test is twice the p-value of a one-tailed test.

In this problem, for the one-tailed test, the p-value is of 0.1, hence the p-value for a two-sided test would be of 0.20.

You can learn more about p-values at brainly.com/question/13873630