1. For the following research question, specify the parameter and give the null and alternative hypotheses. "Is there a difference in the proportions of male and female college students who smoke cigarettes?
2. For the following research question, specify the parameter and give the null and alternative hypotheses. "Do a majority of Americans between the ages of 18 and 30 think the use of marijuana should be legalized?"
3. For the following research question, specify the parameter and give the null and alternative hypotheses. "Is the mean age of death for left-handed people lower than it is for right-handed people?
4. Suppose H0: mu1-mu2 = 0, t= -2.306, df=8, p-value=0.025. What was the alternative hypothesis for this test?
5. Suppose H0: mu1-mu2 = 0, t=2.306, df=8, p-value=0.05. What was the alternative hypothesis for this test?
6. Suppose H0: mu1-mu2 = 0, t=2.306, df=8, p-value=0.975. What was the alternative hypothesis for this test?
7. Suppose H0: mu1-mu2 = 0, t= -2.306, df=8, p-value=0.975. What was the alternative hypothesis for this test?
8. Suppose H0: mu_d = 0, d-bar = -4, s_d = 15, and n = 50. Calculate the test statistic t.
9. Suppose H0: p1-p2 = 0; HA: p1-p2 > 0; z=1.75. Find the p-value for this test.
10. Suppose H0: p1-p2 = 0; HA: p1-p2 does not equal 0; z= -1.75. Find the p-value for this test.
2 answers