Growth Spurt: It is generally known that boys grow at an unusually fast rate between the ages of about 12 and 14. Following are heights, in inches of 10 boys, measured at age 12 and again at age 14. Age 12 Age 14 59.2 64.9 61.4 67.0 60.7 65.5 55.9 62.1 59.7 65.4 56.3 61.5 63.0 68.5 58.6 63.9 61.1 65.8 59.5 64.5 Send data to Excel Part: 0 / 2 Part 1 of 2 (a) Construct a 98% confidence interval for the mean increase in height for boys between the ages of 12 and 14. Let d represent the height at age 14 minus the height at age 12. Use tables to find the critical value and round the answers to at least two decimal places. A 98% confidence interval for the mean increase in height for boys between the ages of 12 and 14 is