STATISTICAL TECHNIQUES AND TOOLS
TESTS OF SIGNIFICANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A two-tailed test with n = 41 has a test statistic z = 1.56. Which is the correct p-value?
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0.0594
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Between 0.10 and 0.15
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Between 0.050 and 0.075
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0.1188
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Explanation:
Detailed explanation-1: -The p value is a number, calculated from a statistical test, that describes how likely you are to have found a particular set of observations if the null hypothesis were true. P values are used in hypothesis testing to help decide whether to reject the null hypothesis.
Detailed explanation-2: -Left-tailed test: p-value = cdf(x). Right-tailed test: p-value = 1-cdf(x). Two-tailed test: p-value = 2 × mincdf(x), 1-cdf(x). 13-Feb-2023
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