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7/27/16, 12:25 PMPrint TestPage 1 of 8PRINTABLE VERSIONQuiz 3You scored 93 out of 100Question 1Your answer is CORRECT.Given the following sampling distribution:X-16-11-4420P(X)7/1007/1001/203/100___What is P(X = 20)?a) 0.78b) 0.20c) 0.77d) 0.79e) 0.80f) None of the aboveQuestion 2Your answer is CORRECT.Given the following sampling distribution:X-19 -12 -51115P(X)1/252/251/507/100___What is P(X > -12)?
7/27/16, 12:25 PMPrint TestPage 2 of 8Question 3Your answer is CORRECT.Given the following sampling distribution:X-16 -13 -71114P(X)2/251/252/257/100___What is the mean of this sampling distribution?Question 4Your answer is CORRECT.A store sells only two brands of sofas. One of the brands is currently advertised as on sale. Theadvertisers know that out of the people who come to the store to buy a sofa, every 1 out of 3 will buy themore expensive brand as opposed to the one in the sale advertisement. Let X = price of next sofa sold.What is the expected price of the sofa (E[X]) if the advertised sofa is $200 and the more expensive sofa is$375?