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As in exercise 3 Cholesterol levels in health us adults average about 215mg/Dl with a Standard...

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Basic Math

As in exercise 3 Cholesterol levels in health us adults averageabout 215mg/Dl with a Standard deviation of about 30 mg /dl and areroughly normally distributed If the cholestrol levels of a sampleof 42 healthy us adults is taken what is the probablility that themean cholesterol level of the sample

A. will be no more than 215?

b. will be between 205 and 225

c. Will be less than 200?

d. Will be greater than 220?

Answer & Explanation Solved by verified expert
4.2 Ratings (891 Votes)
a 215 30 n 42 X 21500 Z X n 215 215 30 42 0000 PX 215 PZ    See Answer
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