.5 The Aviation Regulatory Authority (ARA) plans to make it mandatory for the commercial airlines to publish on their websites the average delay by which their flights are delayed. The delays of a randomly selected sample of 16 flights of flight no. F-16 and 12 flights of flight no. AN-12 are given in the Table-1, and Table-2 gives 11 summary measures of the data. [7] Table-1: Delays in minutes- S No. F-15 AN-12 1 47 23 2 33 45 3 10 18 14 30 5 10 12 6 20 5 7 17 7 8 13 60 9 15 75 10 12 43 11 32 23 12 43 8 13 24 14 67 15 22 16 18 Table-2: Summary measures Count 16 12 Sum 397 349 Mean 24.8 29.1 Median 19 23 Mode 10 23.00 Sample Stdev 15.95 22.39 Population Stdev 15.44 21.43 Skewness 1.49 0.90 Kurtosis 1.98 0.06 Q1 13.75 11 Q3 32.25 43.5 (a) What is the point estimate and interval estimate of the mean delay of flight no. F- 16 and flight no. AN-12, for 95% Confidence Level? (b) Why is interval estimate preferred over the point estimate (give precise answer)? (c) What do Skewness values of F-15 and AN-12 given in Tbale-2 indicate (give precise answers)? (Do only by hand; do not type the answers. Draw a box over the final numerical answer. , every formula, and every calculation. If MS Excel is