Q9 Suppose in 2010 15% of students in stat 330 receive an A. You think that this proportion has changed in recent years. After the semester is over you survey your classmates and find out that 25 out of 200 of them received and A. The null hypothesis is H0: p = 0.15. The alternative hypothesis is Ha: p ? 0.15. At alpha = 0.10, test your hypothesis. What is the test statistic? a. 0.024 b. -2.223 c. 1.054 d. -0.990 Q10 Consider the situation from question 9. What is the p-value? a. 0.1611 b. 0.3222 c. 0.0326 d. 1.2193
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