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4 Unit A2 2: Applied Mathematics (A-level only)

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Question 386

The probability that one of Andy's tennis serves lands in court is 0.60.

a(i).

For 20 independent serves, find the probability that exactly 15 land in court.

[1]
a(ii).

Find the probability that more than 15 land in court.

[2]
b.

Andy's coach believes that the population probability of a serve landing in court has changed. In a set, 35 of 50 serves land in court. Test the coach's belief at the 10% level of significance.

[4]
Markscheme

4 Unit A2 2: Applied Mathematics (A-level only) Questions

  1. A Level
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