A survey collects demographic, socioeconomic, dietary, and health-related information on an annual basis. Here is a sample of 20 observations on HDL cholesterol level (mg/dl) obtained from the survey (HDL is "good" cholesterol; the higher its value, the lower the risk for heart disease). 34 48 53 53 64 52 52 46 87 37 45 32 38 44 62 94 36 31 47 40 (a) Calculate a point estimate (in mg/dl) of the population mean HDL cholesterol level. mg/dl (b) Making no assumptions about the shape of the population distribution, calculate a point estimate (in mg/dl) of the value that separates the largest 50% of HDL levels from the smallest 50%. mg/dl (c) Calculate a point estimate (in mg/dl) of the population standard deviation. (Round your answer to three decimal places.) mg/dl
A survey collects demographic, socioeconomic, dietary, and health-related information on an annual basis. Here is a sample of 20 observations on HDL cholesterol level (mg/dl) obtained from the survey (HDL is "good" cholesterol; the higher its value, the lower the risk for heart disease). 34 48 53 53 64 52 52 46 87 37 45 32 38 44 62 94 36 31 47 40 (a) Calculate a point estimate (in mg/dl) of the population mean HDL cholesterol level. mg/dl (b) Making no assumptions about the shape of the population distribution, calculate a point estimate (in mg/dl) of the value that separates the largest 50% of HDL levels from the smallest 50%. mg/dl (c) Calculate a point estimate (in mg/dl) of the population standard deviation. (Round your answer to three decimal places.) mg/dl
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
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ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
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Chapter5: A Survey Of Other Common Functions
Section5.3: Modeling Data With Power Functions
Problem 6E: Urban Travel Times Population of cities and driving times are related, as shown in the accompanying...
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Question
![A survey collects demographic, socioeconomic, dietary, and health-related information on an annual basis. Here is a sample of 20 observations on HDL cholesterol level (mg/dl) obtained from the
survey (HDL is "good" cholesterol; the higher its value, the lower the risk for heart disease).
34
46
40
48 53 53 64 52 52
87 37 45 32 38 44
62 94 36 31 47
(a) Calculate a point estimate (in mg/dl) of the population mean HDL cholesterol level.
mg/dl
(b) Making no assumptions about the shape of the population distribution, calculate a point estimate (in mg/dl) of the value that separates the largest 50% of HDL levels from the smallest 50%.
mg/dl
(c) Calculate a point estimate (in mg/dl) of the population standard deviation. (Round your answer to three decimal places.)
mg/dl
(d) An HDL level of at least 60 is considered desirable as it corresponds to a significantly lower risk of heart disease. Making no assumptions about the shape of the population distribution, estimate
the proportion p of the population having an HDL level of at least 60.
p =](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1665bdf4-5411-4ca1-a903-736ef5c9444c%2Fb7da32e0-1750-4e1a-8db0-b6a5c4923eee%2F220dhh_processed.png&w=3840&q=75)
Transcribed Image Text:A survey collects demographic, socioeconomic, dietary, and health-related information on an annual basis. Here is a sample of 20 observations on HDL cholesterol level (mg/dl) obtained from the
survey (HDL is "good" cholesterol; the higher its value, the lower the risk for heart disease).
34
46
40
48 53 53 64 52 52
87 37 45 32 38 44
62 94 36 31 47
(a) Calculate a point estimate (in mg/dl) of the population mean HDL cholesterol level.
mg/dl
(b) Making no assumptions about the shape of the population distribution, calculate a point estimate (in mg/dl) of the value that separates the largest 50% of HDL levels from the smallest 50%.
mg/dl
(c) Calculate a point estimate (in mg/dl) of the population standard deviation. (Round your answer to three decimal places.)
mg/dl
(d) An HDL level of at least 60 is considered desirable as it corresponds to a significantly lower risk of heart disease. Making no assumptions about the shape of the population distribution, estimate
the proportion p of the population having an HDL level of at least 60.
p =
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