You are planning a project to calculate the confidence interval for a population proportion, using the most conservative planning value for the sample size. You have determined that the margin of error will be 0.15 given your original sample size. Then you received a new budget which allowed you to increase your sample size to twenty-five times the original sample size. You conducted the study with this new sample size and you calculated p- hat = 0.40. Give the minimum and maximum values for the confidence interval, including three decimals.

Let us imagine that the number of automobile accidents in a certain region are related to the regional number of registered automobiles in tens of thousands (b1), alcoholic beverage sales in $10,000 (b2), and decrease in the price of gasoline in cents (b3). furthermore, imagine that the regression formula has been calculated as: y = a + b1x1 + b2x2 + b3x3 where y = the number of automobile accidents, a = 7.5, b1 = 3.5, b2 = 4.5, and b3 = 2.5 calculate the expected number of automobile accidents for a football weekend if the region has 25,000 registered vehicles, $75,000 worth of beer is sold, and a gas war causes a 10 cent drop in a gallon of gas.