Edexcel S3 2006 June — Question 8

Exam BoardEdexcel
ModuleS3 (Statistics 3)
Year2006
SessionJune
TopicChi-squared distribution

8. Five coins were tossed 100 times and the number of heads recorded. The results are shown in the table below.
Number
of heads
012345
Frequency6182934103
  1. Suggest a suitable distribution to model the number of heads when five unbiased coins are tossed.
  2. Test, at the \(10 \%\) level of significance, whether or not the five coins are unbiased. State your hypotheses clearly.