jean143965

25.07.2019 • 

Mathematics

The serum cholesterol level of u.s. females 20 years old or older is normally distributed with a mean of 200 mg/dl (milligrams per deciliter) and a standard deviation of 44 mg/dl. let x represent serum total cholesterol level for u.s. females 20 years old or older. one outcome of interest is the probability that a woman has a serum cholesterol level greater than 266 mg/dl. if 300 u.s. women 20 yrs old or older are randomly selected, how many of them would we expect to have a serum cholesterol level greater than 266 mg/dl? choose the closest value. (hint: calculate the probability of interest first)

Ответ:

ajbrock1004

14.03.2022

Mathematics

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P(x>266)
=P(Z>(266-200)/44)
=P(Z>1.5)
=1-P(Z<1.5)
=1-0.9332
=0.0668
This is the probability that the cholesterol level of a woman is >266mg/dL

when we select 300 US women and we need to find the number of women with a high cholesterol level
we have a binomial distribution with n=300, p=0.0668
So
Mean=np=36.74
So
about 37 women are expected to have cholesterol level>266mg/dL

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Ответ:

laladance123

11.04.2020

Mathematics

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Y = -4X + 5

Step-by-step explanation:

X is the slope, If you cover X, you can see that Y = 5

Mark me as brainliest if this helps!

Let me know if you have any questions!

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