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Suppose that a candy company packages a bag of jelly beans whose weight is supposed to be 30 grams but in fact the weight varies from bag to bag

Suppose that a candy company packages a bag of jelly beans whose weight is supposed to be 30 grams, but in fact, the weight varies from bag to bag according to a normal distribution with mean μ = 30 grams and standard deviation σ = 3 grams.

If the company sells the jelly beans in packs of 9 bags, what can we say about the likelihood that the average weight of the bags in a randomly selected pack is 2 or more grams lighter than advertised?

1.     There is no way to evaluate this likelihood, since the sample size (n = 9) is too small.

2.     It is extremely unlikely for this to occur; the probability is very close to 0.

3.     There is about a 5% chance of this occurring.

4.     There is about a 16% chance of this occurring.

5.     There is about a 2.5% chance of this occurring.

Apr 23 2020 View more View Less

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