Help with Probability question

ramdotjp

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Mar 14, 2021
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I have data of 1000 chicken fed with a special feed (Week and Weight) in a csv file


1) If a sample of 60 birds are taken at random, what is the probability that
sample will contain 20 or more birds that will attain a weight of 4 kg by no more
than 9 weeks?

Is Binomial distribution the right solution for this?

2) If a sample of 60 birds are taken at random with replacement, What percentage of such samples are expected
to have a mean weight on the 10th week that is less than 4.2 kg or greater than 5.1 g?

Is Normal distribution the right solution for this?
 
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