. Question 20 In a survey, 12 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $34 and standard deviation of $5. Construct a confidence interval at a 98% confidence level. Give your answers to one decimal place.. Question 22 Based on the data shown below, calculate the correlation coefficient (rounded to three decimal places) X y 5 16.35 6 17.62 7 17.09 8 18.16 9 21.13 10 22.5 11 19.77 12 22.34 13 23.11 14 24.78 15 24.05.Question vil