A fair 4-sided spinner with sides labelled A, B, B, B is spun four times. a. Show

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A fair 4-sided spinner with sides labelled A, B, B, B is spun four times.

a. Show that there are six equally likely ways to obtain exactly two Bs with the four spins.

b. By drawing up the probability distribution table for X, the number of times the spinner comes to rest on B, find the value of Var(X)/E(X).

c. What, in the context of this question, does the value found in part b represent?

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Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

ISBN: 9781108407304

1st Edition

Authors: Dean Chalmers, Julian Gilbey

Question Posted: Sep 13, 2021 03:07 AM

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A fair 4-sided spinner with sides labelled A, B, B, B is spun four times. a. Show

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a The six equally likely ways to obtain exactly two Bs with the four spins ...View the full answer

Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

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