Edexcel S3 2016 June — Question 5

Exam BoardEdexcel
ModuleS3 (Statistics 3)
Year2016
SessionJune
TopicChi-squared distribution

5. Kylie used video technology to monitor the direction of flight, as a bearing, \(x\) degrees, for 450 honeybees that left her beehive during a particular morning. Kylie's results are summarised in the table below.
Direction of flightFrequency
\(0 \leqslant x < 72\)78
\(72 \leqslant x < 140\)69
\(140 \leqslant x < 190\)51
\(190 \leqslant x < 260\)108
\(260 \leqslant x < 360\)144
Kylie believes that a continuous uniform distribution over the interval [0,360] is a suitable model for the direction of flight. Stating your hypotheses clearly, use a 1\% level of significance to test Kylie's belief. Show your working clearly.