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

night midnight showing of the latest Harry Potter movie. She surveys 84 of her students and finds that11 attended the

midnight showing. An appropriate alternative hypothesis is:

a.p=0.20b.p>0.20c.p<0.20d.p0.20

Short Answer

Expert verified

The correct option is c. p<0.20

Step by step solution

01

Explanation: 

The null hypothesis here states that either 20 or greater than 20 percent of the pupils at the Evergreen College went to the opening night at the midnight showing of Harry Potter. Hence, the correct answer is (c)p<0.20. A basic understanding of hypothesis testing is required here. You have to be able to write the null and alternate hypotheses.

02

Solution: 

1184=0.13or13%, according to the sample size, only 13%of students at the Evergreen College went to the opening night at midnight of Harry Potter. The number is much less than 20.

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