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The distribution of weights for 12 month old baby girls in the US is approximately normal...

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Basic Math

The distribution of weights for 12 month old baby girls in theUS is approximately normal with mean u = 21 pounds and standarddeviation of 2.2 pounds.

a) if a 12 month old girl weighs 23.2 pounds, approximately whatweight percentile is she in?

b) if a 12 month old girl is in the 16th percentile in weight,estimate her weight.

c) Estimate the weight of t 12 month old girl who is in the 25thpercentile by weight.

d) Estimate the weight of a 12 month old girl who is in the 75thpercentile by weight.

Answer & Explanation Solved by verified expert
4.1 Ratings (617 Votes)
SolutionGiven thatmean 21 poundsstandard deviation 22 poundsa x 232 poundsUsing zscore formulaz x 232 21 22 22 22    See Answer
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