Mathematics, 19.11.2020 18:00 genyjoannerubiera
Customers at a gas station pay with a credit card (A), debit card (B), or cash (C). Assume that successive customers make independent choices, with P(A) = 0.5, P(B) = 0.2, and P(C) = 0.3. Among the next 10 customers, let X = the number who pay with a debit card. %3D %3D a) What distribution does X have? b) Compute P(X 1) and P(X > 8). %3D c) Find the expected value and variance of X. d) Compute E(X²). e) Let Y = the number among the 10 who don't pay with cash. Find the expected value and variance of Y.
Answers: 1
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Mathematics, 21.06.2019 23:30
Bonnie and bobby are saving money for a vacation. each friend starts with an amount and also saves a specific amount each week. bonnie created a table to show the total she has saved at the end of each week.. weeks 0 1 2 3 4 5 6 7 8 amount saved 12 16 20 24 28 32 36 40 44 bobby came up with the following equation to show the total, y, he has saved at the end of each week, x. y = 12x + 4 compare the rate at which each friend saves money. select the correct answer from the drop-down menu to complete the statement. the rate at which bobby is adding to his savings each week is $ more than the rate at which bonnie is adding to her savings each week.
Answers: 2
Mathematics, 22.06.2019 01:00
Astudent drew a circle and two secant segment. he concluded that if pq ~= ps, then qr ~= st. do you agree with the student’s conclusion? why or why not?
Answers: 1
Customers at a gas station pay with a credit card (A), debit card (B), or cash (C). Assume that succ...
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