Question

thirty percent of primary care doctors think their patients receive unnecessary medical care. If required, round your answer to four decimal places. (a) Suppose a sample of 300 primary care doctors was taken. Show the distribution of the sample proportion of doctors who think their patients receive unnecessary medical care. np = n(1-p) = E(p) = σ(p) = (b) Suppose a sample of 500 primary care doctors was taken. Show the distribution of the sample proportion of doctors who think their patients receive unnecessary medical care. np = n(1-p) = E(p) = σ(p) = (c) Suppose a sample of 1,000 primary care doctors was taken. Show the distribution of the sample proportion of doctors who think their patients receive unnecessary medical care. np = n(1-p) = E(p) = σ(p) = (d) In which of the preceding three cases, part (a) or part (b) or part (c), is the standard error of p smallest? Why? The standard error is the smallest in because p is in parts (a), (b), and (c) and the sample size is largest in .

Answer #1

Thirty-two percent of primary care doctors think their patients
receive unnecessary medical care. If required, round your answer to
four decimal places.
(a)
Suppose a sample of 300 primary care doctors was taken. Show
the distribution of the sample proportion of doctors who think
their patients receive unnecessary medical care.
np =
n(1-p) =
E(p) =
σ(p) =
(b)
Suppose a sample of 500 primary care doctors was taken. Show
the distribution of the sample proportion of doctors who think...

Forty percent of primary care doctors think their patients
receive unnecessary medical care. If required, round your answer to
four decimal places.
(a)
Suppose a sample of 300 primary care doctors was taken. Show
the distribution of the sample proportion of doctors who think
their patients receive unnecessary medical care.
np =
n(1-p) =
E(p) =
σ(p) =
(b)
Suppose a sample of 500 primary care doctors was taken. Show
the distribution of the sample proportion of doctors who think...

Twenty percent of primary care doctors think their patients
receive unnecessary medical care. If required, round your answer to
four decimal places.
(a)
Suppose a sample of 300 primary care doctors was taken. Show
the distribution of the sample proportion of doctors who think
their patients receive unnecessary medical care.
np =
n(1-p) =
E(p) =
σ(p) =
(b)
Suppose a sample of 500 primary care doctors was taken. Show
the distribution of the sample proportion of doctors who think...

Twenty-four percent of primary care doctors think their patients
receive unnecessary medical care. If required, round your answer to
four decimal places.
(a)
Suppose a sample of 300 primary care doctors was taken. Show
the distribution of the sample proportion of doctors who think
their patients receive unnecessary medical care.
np =
n(1-p) =
E(p) =
σ(p) =
(b)
Suppose a sample of 500 primary care doctors was taken. Show
the distribution of the sample proportion of doctors who think...

According to Reader's Digest, 48% of primary care
doctors think their patients receive unnecessary medical care.
Suppose a sample of
330 primary care doctors was taken. Show the sampling distribution
of the proportion of the doctors who think their patients receive
unnecessary medical care. Use z-table.
(to 4 decimals)
b.
What is the probability that the sample proportion will be within
of the population proportion. Round your answer to four
decimals.
c.
What is the probability that the sample proportion...

1) People end up tossing 12% of what they buy at the grocery store.
Assume this is the true population proportion and that you plan to
take a sample survey of 540 grocery shoppers to further investigate
their behavior. Show the sampling distribution of p, the proportion of
groceries thrown out by your sample respondents. If required, round
your answer to four decimal places.
2) eBook
Twenty-two percent of primary care doctors think their patients
receive unnecessary medical care. If...

The Wall Street Journal reported that the age at first startup
for 75% of entrepreneurs was 29 years of age or less and the age at
first startup for 25% of entrepreneurs was 30 years of age or more.
(a) Suppose a sample of 200 entrepreneurs will be taken to learn
about the most important qualities of entrepreneurs. Show the
sampling distribution of p where p is the sample proportion of
entrepreneurs whose first startup was at 29 years of...

Thirty-eight percent of all Americans drink bottled water more
than once a week (Natural resources Defense Council, December 4,
2015). Suppose you have been hired by the Natural Resources Defence
Council to investigate bottled water consumption in St. Paul. You
plan to select a sample of St. Paulites to estimate the proportion
who drink bottled water more than once a week. Assume the
population proportion of St. Paulites who drink bottled water more
than once a week is , the...

A random sample is selected from a population with mean μ = 100
and standard deviation σ = 10.
Determine the mean and standard deviation of the x sampling
distribution for each of the following sample sizes. (Round the
answers to three decimal places.)
(a) n = 8 μ = σ =
(b) n = 14 μ = σ =
(c) n = 34 μ = σ =
(d) n = 55 μ = σ =
(f) n = 110...

What is the age distribution of patients who make office visits
to a doctor or nurse? The following table is based on information
taken from a medical journal.
Age group, years
Under 15
15-24
25-44
45-64
65 and older
Percent of office
visitors
15%
5%
20%
15%
45%
Suppose you are a district manager of a health management
organization (HMO) that is monitoring the office of a local doctor
or nurse in general family practice. This morning the office you...

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