Problem 4: 10 points = [55] Continue with the same data summaries. A sample of n = 16 households was selected for a study of whether their property insurance premium has changed. Matched pairs ((X, Y): 1i16) were collected and processed. The X-value represented the premium paid in the past year, and Y was the projected premium for the next year. Sample summaries are shown below. X $2,300 and Y = $2,850 with the differences (D, Y, X, 1j 16) that show the sample standard deviation S = $1,000 1. Estimate the population average change up with the 95% confidence. 2. Show critical value, midpoint, and margin of error. Solution