below.14-year-old girls' summary data: n1 = 40, x1 = 155cm, S1 = 6.1cm14-year-old girls' summary data: n1 = 40, x2 = 146cm, S1 = 9.1cm(a)[3] Completely describe the sampling distribution of X1 X2.(b)[5] Estimate the difference in height between girls and boys, using a 95% confidenceinterval[3]. Based on your interval, do you think there is a significant difference between thetrue mean height of 14-year-old girls and boys? Explain[2].(c)[2] Interpret your interval.