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A statistics instructor believes that more than 20% of Evergreen Valley College (EVC) students attended the...

A statistics instructor believes that more than 20% of Evergreen Valley College (EVC) students attended the midnight showing on opening night of the latest Harry Potter movie. She surveys 84 of her students and finds that 11 attended the midnight showing. What is an appropriate alternative hypothesis? p ≤ 0.20 p = 0.20 p < 0.20 p > 0.20

math   Statistics-And-Probability   
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Answer #1

Solution:

This a right (One) tailed test.

The null hypothesis is,

Ho: p = 0.20

The alternative hypothesis is,

Ha: p > 0.20

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