an 17 If A and B are two event, , where P(A) = 0.4, P(B)= 0.6 and P(An B) = 0.24then A and B are: ed Select one: d out of O a. disjoint. O b. dependent question O c. different O d. independent. en 16 A variety of summary statistics were collected for a small sample (5) of bivariate data, where the dependent variable was y and an independent variable was x: Er = 20, Ey = 60, ay = 273, = 100, Ey? = 800 and n= 5. Use these sums to compute the intercept ( a) in the regression equation y = a + b x: ed I out of Select one: question O a. a = 5.400 . O b. a = - 5.125. O c. a = - 5.400. O d. a = 5.125. %3! tion 15 A random sample of size 16 is taken from a normal distribution with population variance 2.56 and sample ret mean is 130, find the margin error for 95% confidence interval of population mean ered ed out of Select one: O a. 0.194 ag question O b. 1.784 O c. 1.098 O d. 0.784