Question

Lesson 8.1.1: Sampling Distribution of Differences in Two Proportions TUDENT NAME DATE TAKE IT HOME A 1992 study found that approximately 10.1% of males and 7.6% of females in the United States are left- handed. In the study, handedness was determined by the hand a person used for throwing a information to answer the following questions Suppose we are interested i samples of males and females. We survey 250 males and 300 females and ask which hand they use to throw n examining differences in sample proportions from independent random a ball. 1 Let p, be the proportion of females who throw a ball with their left hand. Let p2 be the proportion of males who throw a ball with their left hand. What is the mean for the sampling distribution of Pi- P2? What does this value tell us? 2 What is the standard error for the sampling distribution of p1 - P2? Is the normal distribution an appropriate model for the sampling distribution of p1 - P2? How do you know? 0 n 7(1992): 601-08.

Answer 1

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