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# 6 CRE Birth Weights Birth weights in the United States are ISBN: 9780321836960 18

## Solution for problem 6CRE Chapter 10.6

Elementary Statistics | 12th Edition

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Problem 6CRE

?6 CRE Birth Weights? Birth weights in the United States are normally distributed with a mean of 3420 g and a standard deviation of 495 g. a.? What percentage of babies are born with a weight greater than 3500 g? b.? Find ? 0, which is the 10th percentile. c.? The Rockland Medical Center requires special treatment for babies that are less than 2450 g (unusually underweight) or more than 4390 g (unusually overweight). What is the percentage of babies who require special treatment? Under these conditions, do many babies require special treatment?

Step-by-Step Solution:

Solution 6 CRE Step 1 : Birth weight in the united states is normally distributed with a mean of 3420g and a standard deviation of 495g. We have to find the percentage of babies are born with a weight greater than 3500g Following are the steps to analyze data from Mini Tab. . Enter the dataset in stat disk graphprobability distribution. . Then choose probability view ok . Select normal distribution and compute mean and standard deviation. . Define probability value in shaded region and choose right tail x value ok From the graph we can see in the right tail region the value is 0.4358 43.58% of babies born with weight greater than 3500g. Step 2 : To find 10th percentile value from Minitab . Enter the dataset in stat disk graphprobability distribution. . Then choose probability view ok . Select normal distribution and compute mean and standard deviation. . Define probability value in shaded region and choose right tail probability value ok From the above graph the 10th percentile value is 2786

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##### ISBN: 9780321836960

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