The normal distribution is assumed. Construct 98% confidence interval to estimate the average weight of bull-calves.

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Twenty bull-calves are randomly selected and measured. The weights of bull-calves are
following: 2 times 128 kg; 5 times 131 kg; 7 times 133 kg; 4 times 136 kg and 2 times 137 kg.
The normal distribution is assumed. Construct 98% confidence interval to estimate the average
weight of bull-calves.
Transcribed Image Text:Twenty bull-calves are randomly selected and measured. The weights of bull-calves are following: 2 times 128 kg; 5 times 131 kg; 7 times 133 kg; 4 times 136 kg and 2 times 137 kg. The normal distribution is assumed. Construct 98% confidence interval to estimate the average weight of bull-calves.
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