Serum cholesterol is an important risk factor for coronary disease. Suppose that serum cholesterol is approximately...
Serum cholesterol is an important risk factor for coronary disease. Suppose that serum cholesterol is approximately normally distributed with mean 216 mg/dL and a standard deviation of 46.32 mg/dL.
a. Cholesterol levels in the top 18% are classified as high enough
to warrant risk for heart disease. What cholesterol level
corresponds to this cut-off?
z = ____________
cholesterol = _________ mg/dL
b. Suppose cholesterol levels in the bottom 36% are classified as
normal. What cholesterol level corresponds to a normal
reading?
z = ____________
cholesterol = __________mg/dL
c. Between what two values do the middle 20% of cholesterol
readings fall?
z = +/- ___________________
between mg/dL __________ and __________________ mg/dL
Note: z-scores should include 2 decimal places; all other answers
should be rounded to 3 decimal places.
Homework Answers
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Serum cholesterol is an important risk factor for coronary
disease. Suppose that serum cholesterol is approximately...
please answer all parts. Serum cholesterol is an important risk factor for coronary disease. Suppose that...
please answer all parts.
Serum cholesterol is an important risk factor for coronary disease. Suppose that serum cholesterol is approximately normally distributed with mean 210 mg/dL and standard deviation 52.15 mg/dL a Cholesterol levels in the top 17% are classified as high enough to warrant risk for heart disease. What cholesterol level corresponds to this cut-off? z= o cholesterol = mg/dL b. Suppose cholesterol levels in the bottom 42% are classified as normal. What cholesterol level corresponds to a normal...
label and answer all parts Serum cholesterol is an important risk factor for coronary disease. Suppose...
label and answer all parts
Serum cholesterol is an important risk factor for coronary disease. Suppose that serum cholesterol is approximately normally distributed with mean 212.9 mg/dL and standard deviation 51.78 mg/dL. a. Cholesterol levels in the top 20% are classified as high enough to warrant risk for heart disease. What cholesterol level corresponds to this cut-off? -mg/dL cholesterol- b. Suppose cholesterol levels in the bottom 40% are classified as normal. What cholesterol level corresponds to a normal reading? o...
please answer all parts. Serum cholesterol is an important risk factor for coronary disease. Suppose that...
please answer all parts.
Serum cholesterol is an important risk factor for coronary disease. Suppose that serum cholesterol is approximately normally distributed with mean 218.1 mg/dl and standard deviation 51.74 mg/dL. a Cholesterol levels in the top 19% are classified as high enough to warrant risk for heart disease. What cholesterol level corresponds to this cut-off ° cholesterol- mg/dL b. Suppose cholesterol levels in the bottom 36% are classified as normal. What cholesterol level corresponds to a normal reading? °...
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Background Cholesterol is a waxy, fatty substance found in the bloodstream. Serum Cholesterol measures the level of both good (HDL) and bad (LDL) cholesterol in your blood. For adults, a desirable cholesterol level will be between 125 mg/dL and 200 mg/dL. A borderline high cholesterol count is between 200 mg/dL and 239 mg/dL, and any reading from 240 mg/dL and beyond is considered high. High serum cholesterol levels could result in complications including stroke, heart attack, or coronary artery disease....
High-density lipoprotein (HDL) is sometimes called the “good cholesterol” because high values are associated with a...
High-density lipoprotein (HDL) is sometimes called the “good cholesterol” because high values are associated with a lower risk of heart disease. According to the American Heart Association, people over the age of 20 years should have at least 40 mg/dL of HDL cholesterol. HDL cholesterol levels for men have a mean of 46 mg/dL with a standard deviation of 13.6 mg/dL. Assume that the distribution is Normal. HDL levels of 60 mg / dL are believed to protect people from...
The blood cholesterol levels of men aged 55 to 64 are approximately normal with mean 222...
The blood cholesterol levels of men aged 55 to 64 are approximately normal with mean 222 mg/dl and standard deviation 37 mg/dl. What range of values corresponds to the 10% highest cholesterol levels? A) > 175 B) > 247 C) > 269 D) > 288 Gown Z Area Area left right 90% 10% 37 1.28 148 296 111 333 185 222 259 Cholesterol level (mg/dl) DEEP FRIED BUTTER
Coronary heart disease (CHD) begins in young adulthood, and is the fifth leading cause of death...
Coronary heart disease (CHD) begins in young adulthood, and is
the fifth leading cause of death among adults, and one of the
crucial factor is the serum cholesterol level. It is reported that
the serum cholesterol level for women in US is 168 mg/dl 10 years
ago. A researcher wants to see if the serum cholesterol level has
changed ever since. He collected a random sample of 30 females, and
their serum cholesterol level is measured and recorded in the...
(1 point) Cholesterol levels for a group of women aged 20-29 follow an approximately normal distribution...
(1 point) Cholesterol levels for a group of women aged 20-29 follow an approximately normal distribution with mean 177.4 milligrams per deciliter (mg/dı). Medical guidelines state that women with cholesterol levels above 240 mg/dl are considered to have high cholesterol and about 3.5% of women fall into this category. 1. What is the Z score hat corresponds to the top 35% or the 96 5 th percenti e or the standard normal distribution? Round our answer to three decim a...
Elevated cholesterol levels pose a risk of heart disease. For 20 – 74-year-olds males in the...
Elevated cholesterol levels pose a risk of heart disease. For 20 – 74-year-olds males in the United States, cholesterol level is normally distributed. Cholesterol levels above 220 are considered to of moderate risk. Health officials feel cholesterol levels of male college students may be of concern because of diet or lack of exercise. To test this premise, the cholesterol levels of 13 male students in three different classes at Montgomery College were measured and found to have a mean of...
2. Coronary heart disease (CHD) begins in young adulthood, and is the fifth leading cause of...
2. Coronary heart disease (CHD) begins in young adulthood, and is the fifth leading cause of death among adults, and one of the crucial factor is the serum cholesterol level. It is reported that the serum cholesterol level for women in US is 168 mg/dl 10 years ago. A researcher wants to see if the serum cholesterol level has changed ever since. He collected a random sample of 30 females, and their serum cholesterol level is measured and recorded in...
please answer all parts.
Serum cholesterol is an important risk factor for coronary disease. Suppose that serum cholesterol is approximately normally distributed with mean 210 mg/dL and standard deviation 52.15 mg/dL a Cholesterol levels in the top 17% are classified as high enough to warrant risk for heart disease. What cholesterol level corresponds to this cut-off? z= o cholesterol = mg/dL b. Suppose cholesterol levels in the bottom 42% are classified as normal. What cholesterol level corresponds to a normal...
label and answer all parts
Serum cholesterol is an important risk factor for coronary disease. Suppose that serum cholesterol is approximately normally distributed with mean 212.9 mg/dL and standard deviation 51.78 mg/dL. a. Cholesterol levels in the top 20% are classified as high enough to warrant risk for heart disease. What cholesterol level corresponds to this cut-off? -mg/dL cholesterol- b. Suppose cholesterol levels in the bottom 40% are classified as normal. What cholesterol level corresponds to a normal reading? o...
please answer all parts.
Serum cholesterol is an important risk factor for coronary disease. Suppose that serum cholesterol is approximately normally distributed with mean 218.1 mg/dl and standard deviation 51.74 mg/dL. a Cholesterol levels in the top 19% are classified as high enough to warrant risk for heart disease. What cholesterol level corresponds to this cut-off ° cholesterol- mg/dL b. Suppose cholesterol levels in the bottom 36% are classified as normal. What cholesterol level corresponds to a normal reading? °...
The blood cholesterol levels of men aged 55 to 64 are approximately normal with mean 222 mg/dl and standard deviation 37 mg/dl. What range of values corresponds to the 10% highest cholesterol levels? A) > 175 B) > 247 C) > 269 D) > 288 Gown Z Area Area left right 90% 10% 37 1.28 148 296 111 333 185 222 259 Cholesterol level (mg/dl) DEEP FRIED BUTTER
Coronary heart disease (CHD) begins in young adulthood, and is
the fifth leading cause of death among adults, and one of the
crucial factor is the serum cholesterol level. It is reported that
the serum cholesterol level for women in US is 168 mg/dl 10 years
ago. A researcher wants to see if the serum cholesterol level has
changed ever since. He collected a random sample of 30 females, and
their serum cholesterol level is measured and recorded in the...
(1 point) Cholesterol levels for a group of women aged 20-29 follow an approximately normal distribution with mean 177.4 milligrams per deciliter (mg/dı). Medical guidelines state that women with cholesterol levels above 240 mg/dl are considered to have high cholesterol and about 3.5% of women fall into this category. 1. What is the Z score hat corresponds to the top 35% or the 96 5 th percenti e or the standard normal distribution? Round our answer to three decim a...
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