(1 point) Heights (in centimeters) and weights (in kilograms) of 7 supermodels are given below. Find the regression equation, letting the variable Heigth be the independent (x) variable, and predict the weight of a supermodel who is 171 cm tall. Height 172 168 174 176 172 174 178 Weight 53 50 54 55 52 55 58 The regression equation is y = + X. The predicted weight of a supermodel who is 171 cm tall is kilograms. Note: Round your answers to 1 decimal place. For intermediary computations also round values to 1 decimal place, if needed .(1 point) Given the following data set, x 3401-240 y 3042 1 3 3 Compute the coefficient of correlation r. Round your answer to 2 decimal places. r =(1 point) A sample of 8 measurements, randomly selected from a normally distributed population, resulted in a sample mean, x = 5.6 and sample standard deviation s = 1.72. Using a = 0.05, test the null hypothesis that the mean of the population is 6.9 against the alternative hypothesis that the mean of the population, M