#4

Suppose a certain species bird has an average weight ofgrams. Based on previous studies, we can assume that the weights of these birds have a normal distribution withgrams. Find the sample size necessary for an 85% confidence level with a maximal error of estimatefor the mean weights of the hummingbirds.

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Group of answer choices

?100

?47

?5

?10

?10

Suppose a certain species bird has an average weight of f - 3.55 grams. Based on previous studies, we can assume that the weights of these birds have a normal distribution with a - 0.29 grams. Find the sample size necessary for an 85% condence level with a maximal error of estimate E - 0.09 for the mean weights of the hummingbirds. 0100 047 05 010 010