43. An urn contains 1 red and 3 white balls. Two balls will be randomly selected, with replacement. If equals the number of red balls in the sample, find the probability distribution for .

83. A small town is divided into 4 districts. Below is data for the number of calls each district's police department received during a week period. Do the data provide evidence that some of the town's police departments are busier than others? Test the relevant hypotheses using a = 0.05. District 1 District 2 District 3 District 4 Number of calls 28 16 31 38

86. Is there an association between gender and voter turnout? The table below gives data from the 2016 presidential election for a random sample of 100 women, and a random sample of 100 men. Is there sufficient evidence, at the = 0.10 level, of a relationship? Voted l Did not vote Women l 74 26 Men l 64 36