Hypothesis Testing for Proportions Quiz

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Johnny took a survey to determine whether Coke or Pepsi products are preferred among the student body. After asking 45 randomly selected students, he determined that 82% prefer Coke products. Are the conditions for a hypothesis test met?

• Yes, because n > 30

• Yes, because np is at least 10

• No, because n < 50

• No, because nq is less than 10

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You will use this write-up for the next several questions as you conduct the ENTIRE hypothesis test. The write-up is provided on each screen.

A recent newspaper article claimed that the President’s approval rating is 46%; however, a sample of 80 U.S. citizens shows that 43 of them approve of the President’s performance. At a 0.10 level of significance, you are interested in determining if there is evidence that the President’s approval rating is actually higher.

What is the alternative hypothesis for this test?

• p = .46

• p ≠ .46

• p < .46

• p > .46