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- KrishnamurthyLv 73 weeks ago
6.

A farmer finds that the weights of sheep on his farm have a normal distribution with mean 66.4 kg and a standard deviation of 5.6 kg.

(i)

250 sheep are chosen at random. Estimate the number of sheep which have a weight of between 70 kg and 72.5 kg.

(ii)

The proportion of sheep weighing more than y kg.

Find the value of y.

- rotchmLv 73 weeks ago
Hints: Too small. Learn to take appropriate pics.

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