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4.2 Statistical distributions (A-level only)

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Question 134

In a regional market survey, it is observed that approximately 35% of visitors to a specific artisanal craft market make a purchase from a pottery stall.

a.

Determine the probability that in a randomly selected group of 75 visitors, at least 32 of them make a purchase from the pottery stall.

[3]
b.

Find the probability that in a randomly selected group of 12 visitors, exactly 5 of them make a purchase from the pottery stall.

[3]
c.

Using a suitable approximation, find the probability that in a randomly selected season where there are 1200 visitors to the market, there are at least 450 who make a purchase from the pottery stall.

[4]
Markscheme

4.2 Statistical distributions (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.2 Statistical distributions (A-level only)

324 exam-style questions on WJEC A Level Maths 4.2 Statistical distributions (A-level only), covering 4.2.1 Statistical distributions (A-level only), 4.2.2 Statistical distributions (A-level only), and 4.2.3 Statistical distributions (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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