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12/13/2018Print Test1/6PRINTABLE VERSIONTest 2You scored 42 out of 48Question 1Your answer is CORRECT.Suppose that 80% of all trucks undergoing a brake inspection at a certain inspection facility pass theinspection. Consider groups of 17 trucks and let X be the number of trucks in a group that have passed theinspection. What is the probability that there will be between 10 and 12 trucks (inclusive) pass theinspection?a) 0.5120b) 0.0680c) 0.2308d) 0.2041e) 0.80Question 2Your answer is CORRECT.A service center receives an average of 0.6 customer complaints per hour. Management's goal is to receivefewer than three complaints each hour. Assume the number of complaints follows the Poisson distribution.Determine the probability that exactly four complaints will be received during the next eight hours.Question 3Your answer is CORRECT.Given the cumulative distribution:
12/13/2018Print Test2/6Determine Q1, the first quartile.Question 4Your answer is CORRECT.The average life a manufacturer's blender is 5 years, with a standard deviation of 1 year. Assuming that thelives of these blenders follow approximately a normal distribution, find the probability that the mean life arandom sample of 9 such blenders falls between 4.4 and 5.1 years.