Answer Happy

Question 20 Not yet We have the following value pairs: {(X,Y)} = {(1, 10), (2, 12), (1/3, 2)}. We know that the variables X and Y are associated by the equation Y = A + BX Please use least square approximation to find the values of A and B. answered Marked out of 3.00 O A=14 and B -.4 None of the other answers P Flag question O A=12 and B-4 O A=3.33 and B=1.33
Question 21 If the probability of engine malfunction during any one hour period is p = 0.02 and Y denotes the number of one hour intervals until the first malfunction, find the mean and standard deviation of Y. Not yet answered Marked out of O mean=300, standard deviation=49.5 O mean=50, standard deviation=25 O mean=300, standard deviation=2450 O mean=50 standard deviation=49.5 3.00 Flag question
Question 22 The number of traffic accidents per day on a certain section of highway is thought to be Poisson distributed with a mean equal to 2.19. Assume accidents are independent. Based on this, how many traffic accidents should be expected during a period of one week? Not yet answered Marked out of approximately 10.36 O 10.95 3.00 O 15.33 Flag question O approximately 12.21