Mathematics, 07.04.2020 19:19 fatherbamboo
An appliance dealer sells three different models of upright freezers having 13.5, 15.9, and 19.1 cubic feet of storage space, respectively. Let X = the amount of storage space purchased by the next customer to buy a freezer. Suppose that X has the following pmf.
x 13.5 15.9 19.1
p(x) 0.20 0.59 0.21
(a) Compute E(X), E(X2), and V(X). (Round your answers to two decimal places.)
E(X) = ft3
E(X2) = ft6
V(X) = ft6
(b) If the price of a freezer having capacity X cubic feet is 22X ? 8.5, what is the expected price paid by the next customer to buy a freezer? (Round your answer to the nearest whole number.)
dollars
(c) What is the variance of the price 22X ? 8.5 paid by the next customer? (Round your answer to the nearest whole number.)
dollars2
(d) Suppose that although the rated capacity of a freezer is X, the actual capacity is h(X) = X ? 0.01X2. What is the expected actual capacity of the freezer purchased by the next customer? (Round your answer to three decimal places.)
ft3
Answers: 2
Mathematics, 21.06.2019 19:30, lalaokawami0912
Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?
Answers: 3
Mathematics, 22.06.2019 03:00, jjgurl60
Ashley spent half of her lunch money on a turkey sandwich. then she spent two-thirds of the money she had left on a bottle of juice and the rest of the money on a cookie. if the cookie cost $.75, how much lunch money did ashley have to start with?
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