a. We are interested in what proportion of people in Minnesota text and drive.

Let p be the true proportion of people in MN who text and drive. Using the above data, calculate and interpret p. Do you think the data represents a good sample from the population of interest? Comment.

Data -

No - 346

Yes - 145

b. Suppose 25% of MN people text and drive. What is the shape of the sampling distribution of the sample proportion of text and drive in MN people? What is its mean and standard deviation? Find the probability that this sample proportion exceeds the one we actually observed in part (a).