Use the given information to find the p-value. the test statistic in a two-tailed test is z = - 1.63.

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Gerardo Woodard

Mathematics

3 March, 18:57

Use the given information to find the p-value. the test statistic in a two-tailed test is z = - 1.63.

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Espinoza · Answer 1

From standard tables, the p-value for a test statistic of z * = - 1.63 is 0.0516.

This p-value is for a one-tailed test (the shaded left portion) of the curve shown in the figure below.

For a two-tailed test, the p-value = 2*0.0516 = 0.1031.

Explanation:

The p-value is used to test a claim made in a null hypothesis.

If the p-value is small (< 0.05) the claim made in the null hypothesis is rejected as being unlikely.

If the p-value is large (> 0.05), the evidence against the claim is weak, and the conclusion is to fail to reject the hypothesis.

If the p-value is equal to the cutoff (say, 0.05), it s uncertain to draw a conclusion.