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A pair spinner A has edges numbered 1,2, 3,3. A fair spinner B has edges numbered ( -3 ;-2 ;-1,1 ). Each ispinner is spun.
A pair spinner A has edges numbered 1,2, 3,3. A fair spinner B has edges numbered ( -3 ;-2 ;-1,1 ). Each ispinner is spun. The number on the edge that the spinner comes to rest on is noted. Let ( X ) be the sum of the numbers of the 2 spinners. (a) Draw up a probability distribution table for ( x ).
(b) Find ( E(x) ) and ( {Var}(x) )
(c) Find the probability that ( X ) is even, given that ( X ) is positive.
Question 3 A fair spinner A has edges numbered 1, 2, 3,3 A fair spinner B has edges numbered -3- 2; 1 - 1. Each spinner is spun. The number on the edge that the spinner comes to rest on is noted. Let X be the sum of the numbers of the 2 spinners. probability distribution table (a) Draw up a probability for X (b) Find E(X) and E(x) and Var (x) (c) Find the probability that X is even, given that X is positive >
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