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Question

For questions (6) and (7), shade the approximate area that would represent the p-value for the alternative hypothesis and z-score, and then calculate the p-value. Round to the nearest thousandth.

6. The alternative hypothesis is a right-tailed with a ^{z-score }= 0.21

7. The alternative hypothesis is a two-tailed with a_{ }z-score =−1.88

8. Two different students conduct a coin flipping experiment with a lefttailed alternative. The obtain the following test statistics:

Student #1: *z *=−2.05

Student #2: *z *=−1.28

Which of the test statistics has a smaller p-value and why?

9. List and briefly summarize the essential ingredients of the hypothesis test.

10. Suppose the following is to be tested: *H*_{0 }: *p*= 0.4 and *H** _{a }*:

*p*≠ 0.4. Calculate the observed

*z*test statistic for the following sample data:

*n*= 80 and 25 test subjects have the characteristic of interest. Round to the nearest thousandth.