A fair triangular spinner has sides labelled 0,1 and 2, and another fair triangular spinner has sides
Question:
A fair triangular spinner has sides labelled 0,1 and 2, and another fair triangular spinner has sides labelled –1, 0 and 1. The score, X, is equal to the sum of the squares of the two numbers on which the spinners come to rest.
a. List the five possible values of X.
b. Draw up the probability distribution table for X.
c. Given that X < 4, find the probability that a score of 1 is obtained with at least one of the spinners.
d Find the exact value of a, such that the standard deviation of X is 1/a × E(X).
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a The possible values of X are 0 1 2 3 and 4 b The ...View the full answer
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Related Book For 
Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook
ISBN: 9781108407304
1st Edition
Authors: Dean Chalmers, Julian Gilbey
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