A numbered wheel is divided into eight sectors of equal size, as shown. The wheel is spun

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A numbered wheel is divided into eight sectors of equal size, as shown. The wheel is spun until it stops with the arrow pointing at one of the numbers. Axel decides to spin the wheel 400 times.

a. Find the number of times the arrow is not expected to point at a 4.

b. How many more times must Axel spin the wheel so that the expected number of times that the arrow points at a 4 is at least 160?

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

ISBN: 9781108407304

1st Edition

Authors: Dean Chalmers, Julian Gilbey

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A numbered wheel is divided into eight sectors of equal size, as shown. The wheel is spun

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a Since there is only one 4 out of 8 sectors the probability tha...View the full answer

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

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