The mean birth weight for full-term newborns in the USA is mu = 7.5 pounds. Assu

Question

The mean birth weight for full-term newborns in the USA is mu = 7.5 pounds. Assume that this distribution is normal in shape and the standard deviation = 2.0. What percentage of full-term newborns weigh equal to or more than 10 pounds, or X = 10? Round to the nearest hundredths place if a fraction. [Note, if your calculated value is not identical to one of the values below, but within plus or minus 25 of an answer below, assume its a rounding error and select the answer that is closest to your calculated value.] 10.56 39.44 51.25 89.44 the correct percent is a value not listed in alternatives "a" through "d"

Explanation / Answer

Option A is correct

First nd the Z-score that corresponds to 10 pounds: Z= 10-7.5/2=1.25

The corresponding probability in the table for Z=1.25 is .1056

Round to the nearest hundered fraction = 10.56

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