Question
In: Statistics and Probability
According to a recent poll, 27% of adults in a certain area have high levels of...
According to a recent poll, 27% of adults in a certain area have high levels of cholesterol. They report that such elevated levels "could be financially devastating to the regions healthcare system" and are a major concern to health insurance providers. Assume the standard deviation from the recent studies is accurate and known. According to recent studies, cholesterol levels in healthy adults from the area average about 206 mg/dL, with a standard deviation of about 35 mg/dL, and are roughly Normally distributed. If the cholesterol levels of a sample of 40 healthy adults from the region is taken, answer parts (a) through (d).
(a) What is the probability that the mean cholesterol level of the sample will be no more than 206?
P(y≤206)= (Round to three decimal places as needed.)
(b) What is the probability that the mean cholesterol level of the sample will be between 201and 211?
P(201<y <211)= (Round to three decimal places as needed.)
(c) What is the probability that the mean cholesterol level of the sample will be less than 196?
P(y <196)= (Round to three decimal places as needed.)
(d) What is the probability that the mean cholesterol level of the sample will be greater than 218?
P(y>218)= (Round to three decimal places as needed.)
Solutions
orchestra answered 2 years agoRelated Solutions
According to a recent poll, 26% of adults in a certain area have high levels of...
According to a recent poll,
26%
of adults in a certain area have high levels of cholesterol.
They report that such elevated levels "could be financially
devastating to the regions healthcare system" and are a major
concern to health insurance providers. Assume the standard
deviation from the recent studies is accurate and known. According
to recent studies, cholesterol levels in healthy adults from the
area average about 205 mg/dL, with a standard deviation of about
35mg/dL, and are roughly Normally...
According to a recent poll cholesterol levels in healthy adults are right skewed with a mean...
According to a recent poll cholesterol levels in healthy adults
are right skewed with a mean of 209 mg/dL and a standard deviation
of 35 mg/dL. A random sample of 42 healthy adults is selected. What
is the value of the sample mean cholesterol level such that 92.5%
of sample mean values are below this level? a. 259.4 b. 216.777 c.
201.223 d. 158.6
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