de, 13 red, 7 yellow, and 8 green marbles. A marble is selected at random, its e
ID: 3046181 • Letter: D
Question
de, 13 red, 7 yellow, and 8 green marbles. A marble is selected at random, its e is replaced. What is the probability of selecting two white marbles ina 7. A bag contains 10 white, 12 blue, color recorded, and then the marble row? (4 Points) yellow, and 8. Let X number of prior convictions for prisoners at a state prison at whic Number of Prior Convictions 0 Probability 4 0.01 0.45 0.260.17 0.11 (a) Find the expected number of prior convictions. (4 Points) tb) Find the probability that a prisoner has 1 or more prior convictions (4 Ppoints) A pregnancy test claims it is 99% effective. Suppose you get 6 pregnant women to take the test. (a) What is the probability that all 6 tests come back positive? (4 Points) 9,Explanation / Answer
7. Total number of marbles = 50
Number of white marbles = 10
P(white) = 10/50 = 0.2
P(2 white marbles in a row) = 0.2x0.2
= 0.04
8. (a) Expected number of convictions = 0x0.01 + 1x0.45 + 2x0.26 + 3x0.17 + 4x0.11
= 1.92
(b) P(1 or more prior convictions) = 1 - P(0 prior convictions)
= 1 - 0.01
= 0.99
P.S: Please post different questions separately
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