Question

In a recent study, the Centers for Disease Control reported that diastolic blood pressures of adult women in the U.S. are approximately normally distributed with mean 80.6 and standard deviation 9.9.

1. What proportion of women have blood pressures lower than 70?

2. What is the 80th percentile of blood pressures?

3. A woman has a blood pressure of 84 mm. What percentile is her blood pressure on? (Round up the final answer to the nearest whole number.)

4. A diastolic blood pressure greater than 90 is classified as hypertension (high blood pressure). What proportion of women have hypertension?

Answer #1

In a recent study, the Centers for Disease Control reported that
diastolic blood pressures of adult women in the U.S. are
approximately normally distributed with mean 80.9 and standard
deviation 9.9.
A) What proportion of women have blood pressures
lower than 70?
B) What is the 80th percentile of blood
pressures?
C) A woman has a blood pressure of 84 mm. What
percentile is her blood pressure on? (Round up the final answer to
the nearest whole number.)
D) A...

In a recent study, the Centers for Disease Control and
Prevention reported that diastolic blood pressures of adult women
in the United States are approximately normally distributed with
mean 80.1 and standard deviation of 9.9.
(a) Find the 70th percentile of the blood pressures.
(b) Find the 33rd percentile of the blood pressures.
(c) Find the third quartile of the blood pressures.
Use the TI-84 Plus calculator and round the answers to at least
two decimal places.

Check our blood pressure: In a recent study, the Centers for
Disease Control and prevention reported that diastolic blood
pressures of adult women in the United States are approximately
normally distributed with mean 80.8 and a standard deviation of
10.2.
(a) What proportion of women have blood pressures lower than
69?
(b) What proportion of women have blood pressures between 70 and
90?
(c) A diastolic blood pressure greater than 90 is classified as
hypertension (high blood pressure). What proportion...

Suppose that diastolic blood pressures of adult women in the
United States are approximately normally distributed with mean 80.5
and standard deviation 9.9. What proportion of women have blood
pressure greater than 67.6 ? Write only a number as your answer.
Round to 4 decimal places (for example 0.0048). Do not write as a
percentage.

Suppose that diastolic blood pressures of adult women
in the United States are approximately normally distributed with
mean 80.5 and standard deviation 9.9. What proportion of women have
blood pressure greater than 72.9 ?
Write only a number as your answer. Round to 4 decimal
places (for example 0.0048). Do not write as a percentage.

For women aged 18-24, systolic blood pressures (in mm Hg) are
normally distributed with a mean of 114.8 and a standard deviation
of 13.1. Hypertension is commonly defined as a systolic blood
pressure above 140.
a. If a woman between the ages of 18 and 24 is randomly
selected, find the probability that her systolic blood pressure is
greater than 140.
b. If 4 women in that age bracket are randomly selected, find
the probability that their mean systolic blood...

For women aged 18-24, systolic blood pressures (in mm Hg) are
normally distributed with a mean of 114.8 and a standard deviation
of 13.1. Hypertension is commonly defined as a systolic blood
pressure above 140. a. If a woman between the ages of 18 and 24 is
randomly selected, find the probability that her systolic blood
pressure is greater than 140. b. If 4 women in that age bracket are
randomly selected, find the probability that their mean systolic
blood...

Suppose that diastolic blood pressure readings of adult males
have a bell-shaped distribution with a mean of 80 mmHg and a
standard deviation of 11 mmHg. Using the empirical rule, what
percentage of adult males have diastolic blood pressure readings
that are greater than 102 mmHg?

Suppose that diastolic blood pressure readings of
adult males have a bell-shaped distribution with a mean of 79mmHg
and a standard deviation of 10mmHg. Using the empirical rule, what
percentage of adult males have diastolic blood pressure readings
that are greater than 99mmHg? Please do not round your answer.

Hypertension is when an adult is classified as having high blood
pressure (above 130 systolic blood pressure is considered
hypertension). Researchers want to know the proportion of adult
North Americans (above age of 18) that have hypertension. Based on
a study of 3532 adult North Americans, 1219 of them were classified
as having hypertension.
a)Researchers want to test if more than a quarter of all North
American adults have hypertension (that is to say more than 25%
proportion of North...

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