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Back to 9.1 Null and Alternative Hypotheses

9.1 Exercise 17

Avg difficulty 2.5

A statistics instructor believes that fewer than 20 percent 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 that 11 attended the midnight showing. An appropriate alternative hypothesis is as follows:

  1. p = 0.20
  2. p > 0.20
  3. p < 0.20
  4. p ≤ 0.20

OpenStax Statistics, 9.1 Null and Alternative Hypotheses, exercise 17

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