Question

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 to 4 decimal places.*

A: 0.0127 |
B: 0.0140 |
C: 0.1395 |
D: 0.3135 |
E: 0.4164 |
F: 0.5578 |

3. What does the Central Limit Theorem say about the shape of
the sampling distribution of [^(*p*)]?

a) The Central Limit Theorem says that as the sample size grows
large, the sampling distribution of [^(*p*)] will approach
the population distribution.

b) The Central Limit Theorem says that the shape of the sampling
distribution of [^(*p*)] is completely determined by the
population parameter *p*.

c) The Central Limit Theorem does not say anything about the
sampling distribution of [^(*p*)] because it is not a
population mean.

d) The Central Limit Theorem says that as the sample size grows
large, the sampling distribution of [^(*p*)] will become
approximately normal.

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

A: 0.1049 |
B: 0.1265 |
C: 0.2942 |
D: 0.3692 |
E: 0.4893 |
F: 0.5589 |

5. Find *a* such that *P*(0.64 − *a* <
[^(*p*)] < 0.64 +*a* ) = 0.88. *Answer to 3
decimal places.*

A: 0.022 |
B: 0.056 |
C: 0.111 |
D: 0.266 |
E: 0.403 |
F: 0.484 |

Answer #1

thank you

please upvote

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, 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...

In a recent poll of 100 randomly selected adults in the United
States, 82 had obtained a high school diploma. Complete the steps
below:
a) What is the sample proportion?
b) How are the conditions of the Central Limit Theorem met for
this scenario?
c) What is the margin of error for a 95% confidence interval?
Round to 3 places. The margin of error formula is
1.96p^(1−p^)n.
d) What is the 95% confidence interval? Round to 3
places.
e) Would...

According to a survey in a country, 39 % of adults do not own
a credit card. Suppose a simple random sample of 200 adults is
obtained. Complete parts (a) through (d) below.
(a) Describe the sampling distribution p the sample proportion
of adults who do not own a credit card. Choose the phrase that best
describes the shape of the sampling distribution of p below.
Determine the mean of the sampling distribution of
Determine the standard deviation of the...

You may need to use the appropriate appendix table or technology
to answer this question. Software companies work hard to produce
software that does not have bugs in it. The average number of bugs
found in a new software program at its inception is 26.5 with a
standard deviation of 3.5 bugs. A random sample of size 45 software
programs was examined. (a) Determine the mean (in bugs) of the
sampling distribution of the sample mean for samples of size...

Question 1: In a large city, 46% of adults support the
local football team building a new stadium. If a poll is taken from
a random sample of 80 adults in the large city, which of the
following properly describes the sampling distribution of the
sample proportion of adults who support the stadium?
A) Mean: 36.8, Sigma P-hat: 4.46, the distribution is
approximately normal.
B) Mean: 36.8, Sigma P-hat: 4.46, shape of the distribution is
unknown.
C) Mean: 0.46, Sigma...

According to a recent poll,26 % of adults in a certain area have
high levels of cholesterol. They report that such elevated levels
"could be financially devastating to the regions healthcare system"
and are a major concern to health insurance providers. According to
recent studies, cholesterol levels in healthy adults from the area
average about 205 mg/dL, with a standard deviation of about 20
mg/dL, and are roughly Normally distributed. Assume that the
standard deviation of the recent studies is...

According to a recent poll, 28% of adults in a certain area
have high levels of cholesterol. They report that such elevated
levels "could be financially devastating to the regions healthcare
system" and are a major concern to health insurance providers.
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...

3- A recent Gallup poll of a random sample of 1,015 US adults
reported that a 95% confidence interval for the population
proportion of adults who frequently worry about being the victim of
identity theft is (0.32, 0.40).
(a) We are 95% confident that what parameter is contained in
this interval? (Circle your answer.) Can we say that there is a
probability of 95% that this parameter is actually contained in
this interval?
A) sample proportion B) population proportion C)...

(05.02 LC)
The Central Limit Theorem says that when sample size n is taken
from any population with mean μ and standard deviation σ when n is
large, which of the following statements are true? (4 points)
I. The distribution of the sample mean is exactly Normal.
II. The distribution of the sample mean is approximately
Normal.
III. The standard deviation is equal to that of the
population.
IV. The distribution of the population is exactly Normal.
a
I and...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 10 minutes ago

asked 46 minutes ago

asked 55 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago