Section 10.2 Homework

7.  In a clinical​ trial, 18 out of 835 patients taking a prescription drug daily complained of flulike symptoms. Suppose that it is known that 1.9​% of patients taking competing drugs complain of flulike symptoms. Is there sufficient evidence to conclude that more than 1.9​% of this​ drug’s users experience flulike symptoms as a side effect at the á=0.1 level of​ significance?

What are the null and alternative​ hypotheses?

Find the test​ statistic, z0.

Find the​ P-value. P-value =

​(Round to three decimal places as​ needed.)

Choose the correct conclusion below.

1. Since ​P-value<á​, do not reject the null hypothesis and conclude that there is sufficient evidence that more than 1.9​% of the users experience flulike symptoms.
2. Since ​P-value>á​, reject the null hypothesis and conclude that there is not sufficient evidence that more than 1.9​% of the users experience flulike symptoms.
3. Since ​P-value<á​, reject the null hypothesis and conclude that there is sufficient evidence that more than 1.9​% of the users experience flulike symptoms.
4. Since ​P-value>á​, do not reject the null hypothesis and conclude that there is not sufficient evidence that more than 1.9​% of the users experience flulike symptoms.