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2 Statistics

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Question 198

A spinner is labelled 1,2,3,4,51,2,3,4,51,2,3,4,5. The probabilities of these outcomes are k,2k,2k,3k,4k k,2k,2k,3k,4k\,k,2k,2k,3k,4k respectively.

a.

Find kkk.

[2]
b.

Find the probability of obtaining a number greater than 3.

[1]
c.

The spinner is used 240 times. Find the expected number of outcomes greater than 3.

[2]
Markscheme

2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

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