| Exam Board | CAIE |
|---|
| Module | FP2 (Further Pure Mathematics 2) |
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| Year | 2018 |
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| Session | June |
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| Topic | Hypothesis test of a normal distribution |
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7 A large number of athletes are taking part in a competition. The masses, in kg , of a random sample of 7 athletes are as follows.
$$\begin{array} { l l l l l l l }
98.1 & 105.0 & 92.2 & 89.8 & 99.9 & 95.4 & 101.2
\end{array}$$
Assuming that masses are normally distributed, test, at the \(10 \%\) significance level, whether the mean mass of athletes in this competition is equal to 94 kg .