Question
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who eat fast...
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who eat fast food four to six times per week. Her estimate must be accurate within 5% of the population proportion.
(a) No preliminary estimate is available. Find the minimum sample size needed.
(b) Find the minimum sample size needed, using a prior study that found that 20% of the respondents said they eat fast food four to six times per week.
(c) Compare the results from parts (a) and (b).
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
A researcher wishes to estimate, with 90% confidence, the population proportion of adults who eat fast...
A researcher wishes to estimate, with 90% confidence, the
population proportion of adults who eat fast food four to six times
per week. Her estimate must be accurate within 5% of the
population proportion. (a) No preliminary estimate is available.
Find the minimum sample size needed. (b) Find the minimum sample
size needed, using a prior study that found that 38% of the
respondents said they eat fast food four to six times per week.
(c) Compare the results from...
A researcher wishes to estimate, with 9090% confidence, the population proportion of adults who eat fast...
A researcher wishes to estimate, with
9090%
confidence, the population proportion of adults who eat fast
food four to six times per week. Her estimate must be accurate
within
55%
of the population proportion.
(a) No preliminary estimate is available. Find the minimum
sample size needed.
(b) Find the minimum sample size needed, using a prior study
that found that
2222%
of the respondents said they eat fast food four to six times per
week.
(c) Compare the results from...
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who are confident...
A researcher wishes to estimate, with 95% confidence, the
population proportion of adults who are confident with their
country's banking system. His estimate must be accurate within 4%
of the population proportion. (a) No preliminary estimate is
available. Find the minimum sample size needed. (b) Find the
minimum sample size needed, using a prior study that found that
28% of the respondents said they are confident with their
country's banking system. (c) Compare the results from parts (a)
and (b).
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who think the...
A researcher wishes to estimate, with 95%
confidence, the population proportion of adults who think the
president of their country can control the price of gasoline. Her
estimate must be accurate within 5% of the true proportion.
a) No preliminary estimate is available. Find the minimum
sample size needed.
b) Find the minimum sample size needed, using a prior study
that found that
22%
of the respondents said they think their president can control
the price of gasoline.
c) Compare...
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who think the...
A researcher wishes to estimate, with 95% confidence, the
population proportion of adults who think the president of their
country can control the price of gasoline. Her estimate must be
accurate within 2% of the true proportion. a) No preliminary
estimate is available. Find the minimum sample size needed. b)
Find the minimum sample size needed, using a prior study that
found that 34% of the respondents said they think their president
can control the price of gasoline.
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who think Congress...
A researcher wishes to estimate, with 95% confidence, the
population proportion of adults who think Congress is doing a good
or excellent job. Her estimate must be accurate within 3% of the
true proportion.
(a) No preliminary estimate is available. Find the minimum
sample size needed.
(b) Find the minimum sample size needed, using a prior study
that found that 36% of the respondents said they think Congress is
doing a good or excellent job.
(c) Compare the results from...
A researcher wishes to? estimate, with 95?% ?confidence, the population proportion of adults who are confident...
A researcher wishes to? estimate, with 95?% ?confidence, the
population proportion of adults who are confident with their?
country's banking system. His estimate must be accurate within 3?%
of the population proportion. ?(a) No preliminary estimate is
available. Find the minimum sample size needed. ?(b) Find the
minimum sample size? needed, using a prior study that found that
22?% of the respondents said they are confident with their?
country's banking system. ?(c) Compare the results from parts ?(a)
and ?(b)....
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who are confident...
A researcher wishes to estimate, with 99% confidence, the
population proportion of adults who are confident with their
country's banking system. His estimate must be accurate within 3%
of the population proportion. (a) No preliminary estimate is
available. Find the minimum sample size needed. (b) Find the
minimum sample size needed, using a prior study that found that
26% of the respondents said they are confident with their
country's banking system. (c) Compare the results from parts (a)
and (b).
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who support labeling...
A researcher wishes to estimate, with 95% confidence, the
population proportion of adults who support labeling legislation
for genetically modified organisms (GMOs). Her estimate must be
accurate within 5% of the true proportion. (a) No preliminary
estimate is available. Find the minimum sample size needed. (b)
Find the minimum sample size needed, using a prior study that
found that 66% of the respondents said they support labeling
legislation for GMOs. (c) Compare the results from parts (a) and
(b). (a)...
A researcher wishes to? estimate, with 90?% ?confidence, the population proportion of adults who say chocolate...
A researcher wishes to? estimate, with 90?% ?confidence, the
population proportion of adults who say chocolate is their favorite
ice cream flavor. Her estimate must be accurate within 5?% of the
population proportion. ?(a) No preliminary estimate is available.
Find the minimum sample size needed. ?(b) Find the minimum sample
size? needed, using a prior study that found that 36?% of the
respondents said their favorite flavor of ice cream is chocolate.
?(c) Compare the results from parts? (a) and?...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 22 minutes ago
asked 22 minutes ago
asked 43 minutes ago
asked 43 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 2 hours ago