Question

According to a recent poll, 65% of adults who use the Internet
have paid to download music. In a random sample of size 675, adults
who use the Internet, let [^(*p*)] represent the sample
proportion who have paid to download music.

1. Find the mean of the sampling distribution of
[^(*p*)]. *Answer to 2 decimal places.*

2. Find the standard deviation of the sampling distribution of
[^(*p*)]. *Answer to 4 decimal places*

3. Compute the probability that [^(*p*)] is less than
0.631. *Answer to 4 decimal places.*

4. Find *a* such that *P*(0.65 − *a* <
[^(*p*)] < 0.65 +*a* ) = 0.88. *Answer to 3
decimal places.*

Answer #1

According to a recent poll, 64% of adults who use the Internet
have paid to download music. In a random sample of size 675, adults
who use the Internet, let [^(p)] represent the sample
proportion who have paid to download music.
Find the mean of the sampling distribution of [^(p)].
Answer to 2 decimal places.
Tries 0/5
Find the standard deviation of the sampling distribution of
[^(p)]. Answer to 4 decimal places.
Tries 0/5
What does the Central Limit Theorem...

According to a recent poll, 64% of adults who use the Internet
have paid to download music. In a random sample of size 1175,
adults who use the Internet, let [^(p)] represent the
sample proportion who have paid to download music.
1. Find the mean of the sampling distribution of
[^(p)]. Answer to 2 decimal places.
A: 0.17
B: 0.38
C: 0.46
D: 0.64
E: 0.70
F: 0.83
2. Find the standard deviation of the sampling distribution of
[^(p)]. Answer...

A recent poll found that 65% of registered voters in the U.S.
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sampling distribution for p-hat. Third, state the parameters to the
sampling distribution and round to 4 decimal place, as needed.

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According to recent studies, cholesterol levels in healthy adults
from the area average about 205 mg/dL, with a standard deviation of
about 35mg/dL, and are roughly Normally distributed. Assume that
the standard deviation of the recent studies is accurate...

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high levels of cholesterol. They report that such elevated levels
"could be financially devastating to the regions healthcare system"
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average about 205 mg/dL, with a standard deviation of about 20
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standard deviation of the recent studies is...

According to a recent poll cholesterol levels in healthy adults
are normally distributed with a mean of 209 mg/dL and a standard
deviation of 35 mg/dL. A random sample of 42 healthy adults is
selected. Describe the sampling distribution of the sample mean
cholesterol level for the sample of 42 adults.

When 3014 3014 adults were surveyed in a? poll, 73 73?% said
that they use the Internet. Is it okay for a newspaper reporter to
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Why or why? not? Identify the null? hypothesis, alternative?
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Use the? P-value method. Use the normal distribution as an
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According to a recent poll cholesterol levels in healthy adults
are right skewed with a mean of 209 mg/dL and a standard deviation
of 35 mg/dL. A random sample of 42 healthy adults is selected.
Describe the sampling distribution of the sample mean cholesterol
level for the sample of 42 adults.
a. X̄ ~ AN(209, 35)
b. X̄ ~ N(209, 5.4006)
c. X̄ ~ N(209, 35)
d.
X̄ ~ AN(209, 5.4006)

According to a recent poll cholesterol levels in healthy adults
are right skewed with a mean of 209 mg/dL and a standard deviation
of 35 mg/dL. A random sample of 42 healthy adults is selected.
Describe the sampling distribution of the sample mean cholesterol
level for the sample of 42 adults.
a.
X̄ ~ N(209, 5.4006)
b.
X̄ ~ N(209, 35)
c.
X̄ ~ AN(209, 5.4006)
d.
X̄ ~ AN(209, 35)

A recent Gallup Poll found that 95% of American adults are
"satisfied with their personal life."
Suppose you take a random sample of 5 Americans and ask each one
if they are "satisfied with their personal life" and record the
number who report personal life satisfaction. Use this experiment
to answer the following questions. Round solutions to four decimal
places, if necessary.
a. Create a binomial probability distribution (table) for this
experiment.
b. Calculate the mean of the binomial distribution....

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