Question

Glaucoma is a disease of the eye that is manifested by high
intraocular pressure. The distribution of intraocular pressure in
the general population is approximately normal with mean 16 mm Hg
and standard deviation 3 mm Hg. |

(a) | What percentage of people have an intraocular pressure lower than 11 mm Hg? |

(b) | Fill in the blank. Approximately 80% of adults in the general population have an intraocular pressure that is greater than ________ (how many?) mm Hg. |

Answer #1

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...

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...

A researcher wishes to determine whether people with high blood
pressure can reduce
their blood pressure, measured in mm Hg, by following a particular
diet. To test the claim, she conducts a controlled experiment with
the following data:
Treatment Group Control Group _
Sample mean 120.5 149.3
Sample SD 17.4 30.2
Sample size 101 105
Use this data and a significance level of 0.01 to test the claim
that the treatment group is from a population with a smaller...

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...

1. Write the corresponding letter of the distribution used to
conduct the test to answer the question or to find the probability
requested in the blank to the left of the given information. You
will only use each letter once.
a. Student’s T
b. Standard Normal
c. Chi-Square
d. Binomial
e. Poisson
_________________Suppose that a doctor claims that 17 year olds
have an average body temperature that is warmer than the commonly
accepted average human temperature of µ = 98.6...

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?

Example 1: Among females in the US in a given age cohort, a
diastolic blood pressure is normally distributed with mean µ = 95
mm Hg and standard deviation σ = 15 mm Hg. a) What is the
probability that a randomly selected woman has a diastolic blood
pressure less than 90 mm Hg? b) What is the probability that she
has a diastolic blood pressure greater than 95 mm Hg? c) What is
the probability that she has 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. U.S. women aged 20 and over have a mean HDL of 55
mg/dL with a standard deviation of 15.5 mg/dL. Assume that the
distribution is Normal.
Women with more than 40 mg / dL but less than...

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. U.S. women aged 20 and over have a mean HDL of 55
mg/dL with a standard deviation of 15.5 mg/dL. Assume that the
distribution is Normal.
What percent of women have low values ofWhat percent of women...

IQ scores are known to be normally distributed with a mean of
100 and a standard deviation of 16.
a. Determine the percentage of students who score between 85 and
120.
b. Determine the percentage of students who score 80 or
greater.
c. Obtain the quartiles, Q1, Q2, and Q3 for the IQ scores, and
show this on a sketch of a normal curve. Include both a z-axis and
an x-axis below the curve.
d. If Mensa only accepts the...

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