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Digicel LTE 2:38 PM < Back Business Statistics - May B. i. Find the value of b ii. Calculate E(X) iii. Calculate the standard deviation Two Events A and B are such that P(A Independent events, find: i. P (An B) ii. AnBl) iii. A1 OBI) Ouestion 3 The data below shows the following information: x 3 2 4 4 6 4 8 5 0.25 9 7 and P(B) = 0.35 11 8 9 A. B. c. D. Calculate and interpret r and r Calculate the value of the slope of the regression line Calculate the value of the value of y intercept of the regression line Using the regression equation to predict the value of x when y = 6 (3 marks) (5 marks) (5 marks) . I f A and B are (5 marks) (4 marks) (3 marks) (Total 25 marks) (12 marks) (4 marks) (5 marks) (4 marks) (Total 25 marks) The Council of Community Colleges of Jamaica Ouestion 4 Page 11 MA THUOI A. B. The probability that a student entering college will graduate is 0.4.Determine the probability that out of 10 students. i. none will graduate ii. More than TWO (2) will graduate iii. At least FOUR (4) will graduate iv. The expected number of students that will graduate (3 marks) (3 marks) (4 marks) (2 marks) The amount spent for goods online is normally distributed with mean of $ 125 and Standard deviation of $ 25 for a certain age group. i. What the percent spent more than $ 175 ii. What percent spent between $100 and $150 iii. What is the probability that they spend more than $50 (4 marks) (6 marks) (3 marks)