Question
In: Statistics and Probability
1. in a recent study, the centers for disease and control centers reported that diastolic blood...
1. in a recent study, the centers for disease and control centers reported that diastolic blood pressures of adult women in the united states are approximately normally distributed with a mean of 80.1 and a standard deviation of 9.5.
a) what proportion of women have blood pressures lower then 62?
b) what proportion of women have blood pressures between 69 and 87?
c) a dialostic blood pressure greater than 90 is classified as hypertension (high blood pressure), what porportion of women have hypertension?
d) is it unusual for a women to have blood pressure lower then 63?
round your answer to four decimal places.
2. the mean serum cholesterol levels for united states adults was 203, with the standard deviation of 42. a simple random sample of 109 adults were chosen. use the ti 84 calculator. round the answers to four decimal places.
a) what is the probability that the sample mean cholesterol levels is greater than 213.
b) what is the probability that the sample mean cholesterol levels is between 191 and 201 is:
c) would it be unusual for the sample mean to be less then 191?
it would be unusual or usual since the probability is:
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Solutions
orchestra answered 1 year agoRelated Solutions
In a recent study, the Centers for Disease Control and Prevention reported that diastolic blood pressures...
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 80.3 and standard deviation 10.1. (a) What proportion of women
have blood pressures lower than 73? (b) What proportion of women
have blood pressures between 74 and 90? (c) A diastolic blood
pressure greater than 90 is classified as hypertension (high blood
pressure). What proportion of women have hypertension? (d) Is...
In a recent study, the Centers for Disease Control reported that diastolic blood pressures of adult...
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 80.8 and standard
deviation 9.9.
What proportion of women have blood pressures lower than 70? The
proportion is _________
What is the 80th percentile of blood pressures? The 80th
percentile is_________
A woman has a blood pressure of 84 mm. What percentile is her
blood pressure on? (Round up the final answer to the...
Question 1. In 2012 the Centers for Disease Control and Prevention reported that in a sample...
Question 1. In 2012 the Centers for Disease
Control and Prevention reported that in a sample of 4,349 African
Americans 31% were Vitamin D deficient. A 90% confidence interval
based on this sample is (0.30, 0.32). It is believed that among the
general population of Americans 8% suffer from Vitamin D
deficiency.
a. Define the appropriate parameter and state
the appropriate hypotheses for testing the claim that, among
African Americans, Vitamin D deficiency occurs at a rate other than
8%....
In 2012 the Centers for Disease Control and Prevention reported that in a sample of 4,349...
In 2012 the Centers for Disease Control and Prevention reported
that in a sample of 4,349 African Americans 31% were Vitamin D
deficient. A 90% confidence interval based on this sample is (0.30,
0.32). It is believed that among the general population of
Americans 8% suffer from Vitamin D deficiency.
Define the appropriate parameter and state the appropriate
hypotheses for testing the claim that, among African Americans,
Vitamin D deficiency occurs at a rate other than 8%.
Does this confidence...
2. In 2016, the Centers for Disease Control and Prevention reported that 36.5% of adults in...
2. In 2016, the Centers for Disease Control and Prevention
reported that 36.5% of adults in the United
States are obese. A county health service planning a new awareness
campaign polls a random sample
of 750 adults living there. In this sample, 228 people were found
to be obese based on their answers
to a health questionnaire. Do these responses provide strong
evidence that the 36.5% figure is not
accurate for this region? Use a significance level of 5% to...
The Centers for Disease Control reported the percentage of people 18 years of age and older...
The Centers for Disease Control reported the percentage
of people 18 years of age and older who smoke (CDC website,
December 14, 2014). Suppose that a study designed to collect new
data on smokers and nonsmokers uses a preliminary estimate of the
proportion who smoke of .32.
a. How large a sample should be taken to estimate the proportion
of smokers in the population with a margin of error of .02 (rounded
up to the next whole number)? Use 95%...
The Centers for Disease Control reported the percentage of people 18 years of age and older...
The Centers for Disease Control reported the percentage of
people 18 years of age and older who smoke (CDC website, December
14, 2014). Suppose that a study designed to collect new data on
smokers and nonsmokers uses a preliminary estimate of the
proportion who smoke of .32. a. How large a sample should be taken
to estimate the proportion of smokers in the population with a
margin of error of .02 (to the nearest whole number)? Use 95%
confidence. b....
The Centers for Disease Control reported the percentage of people 18 years of age and older...
The Centers for Disease Control reported the percentage of
people 18 years of age and older who smoke (CDC website, December
14, 2014). Suppose that a study designed to collect new data on
smokers and nonsmokers uses a preliminary estimate of the
proportion who smoke of .33.
a. How large a sample should be taken to estimate the proportion
of smokers in the population with a margin of error of .02 (to the
nearest whole number)? Use 95% confidence.
b....
The Centers for Disease Control reported the percentage of people 18 years of age and older...
The Centers for Disease Control reported the percentage of
people 18 years of age and older who smoke (CDC website, December
14, 2014). Suppose that a study designed to collect new data on
smokers and nonsmokers uses a preliminary estimate of the
proportion who smoke of .27.
a. How large a sample should be taken to estimate the proportion
of smokers in the population with a margin of error of .02 (to the
nearest whole number)? Use 95% confidence.
b....
The Centers for Disease Control reported the percentage of people 18 years of age and older...
The Centers for Disease Control reported the percentage of
people 18 years of age and older who smoke (CDC website, December
14, 2014). Suppose that a study designed to collect new data on
smokers and nonsmokers uses a preliminary estimate of the
proportion who smoke of .29. a. How large a sample should be taken
to estimate the proportion of smokers in the population with a
margin of error of .02 (rounded up to the next whole number)? Use
95%...
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