CAIE S1 2019 June — Question 5

Exam BoardCAIE
ModuleS1 (Statistics 1)
Year2019
SessionJune
TopicBinomial Distribution
TypeNormal approximation to binomial

5 In a certain country the probability that a child owns a bicycle is 0.65 .
  1. A random sample of 15 children from this country is chosen. Find the probability that more than 12 own a bicycle.
  2. A random sample of 250 children from this country is chosen. Use a suitable approximation to find the probability that fewer than 179 own a bicycle.