Do Hamework Adam Grooms Googie Chrome à Secure https//www.mathod.com/Student 437

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Do Hamework Adam Grooms Googie Chrome à Secure https//www.mathod.com/Student 437795023questionid-flushe MATH 1127: Introduction to Statisics-CRN: 11055 Adam Grooms Homework: Section 5.2 Homework Score: 0 of 11 pts 5.2.19 Save 6 of 9 (6 complete HW Score: 51.5%, 51.5 of 100 pts Question Help 3 mil er da iler and astandard deviation The Intal cholesterol ke els at a sample cr men aged 3S44 are nonnalydsi bred with a mean ir 2 miligams per deciner rams (a) What percent of the men have a total cholesterol level lesss fhan 228 mligrams per cdicibir of blood? b) 11 249 men in the 35-44 age group are randomly selected, about how many would you expect to have a otal cholesterol level greater thon 268 millgrams per deciiter of blood? (a) The percant of the men that have a total cholesterol level lass than 228 mil grams per deciiter of blood is Round to two decimal pisces as ressdod.) Enter your answer in the anawar bax and then cick Chock Answer 1 Pst

Explanation / Answer

We have been given the params of normal distribution, just need to use them to normalize.

Mean = 203 mm

Stdev = 37.8 mm

a. P(X<228) = P(Z<228-203 / 37.8) = P(Z<.66) = .7454. The answer is 74.54%

b. P(X>256) = P(Z> 256-203/37.8) = P(Z>1.402) = .9192. So, out of 249 men , 249*.9192 = 228.88 or 229 people have greater than 256 mmgrams per dec. of blood

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