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A claim is made that college students spend an average of 20 hours per week studying...

A claim is made that college students spend an average of 20 hours per week studying for their courses. You believe the true population average is different than 20 hours, and you would like to test the null hypothesis that μ = 20 hours versus the alternative hypothesis that μ ≠ 20 hours. You gather data from a random sample of 100 college students and calculate a test statistic of 1.2.   This means the p-value would be what?

A 0.0576

B 0.1151

C 0.2302

D 0.8849

E 0.4425

math   Statistics-And-Probability   
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Answer #1

Here the test is two tailed , therefore,

P-value = 2P[z>|z|] = P[z>1.2]=0.2302

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