In an election poll voters must choose between Jenny Blueshoes and Jimmy Redshoes. The poll found that out of 2747 voters 738 of them plan on voting for Jenny Blueshoes. The Blueshoes campaign wants to develop a 95% confidence interval estimate for the proportion of the population that is going to vote for her. What will the margin of error be for the 95% confidence interval?

Here are the 30 best lifetime baseball batting averages of all time, arranged in order from lowest to highest: 0.319, 0.329, 0.330, 0.331, 0.331, 0.333, 0.333, 0.333, 0.334, 0.334, 0.334, 0.336, 0.337, 0.338, 0.338, 0.338, 0.340, 0.340, 0.341, 0.341, 0.342, 0.342, 0.342, 0.344, 0.344, 0.345, 0.346, 0.349, 0.358, 0.366 if you were to build a histogram of these data, which of the following would be the best choice of classes?