Question
In: Statistics and Probability
In a recent year, a poll asked 2447 random adult citizens of a large country how...
In a recent year, a poll asked 2447 random adult citizens of a large country how they rated economic conditions. In the poll, 18% rated the economy as Excellent/Good. A recent media outlet claimed that the percentage of citizens who felt the economy was in Excellent/Good shape was 17%. Does the poll support this claim?
Find a 95% confidence interval for the proportion of adults who rated the economy as Excellent/Good. Select the correct choice below and fill in any answer boxes within your choice.
Solutions
Expert Solution
i) Let p denotes the true proportion of citizens who felt the economy was in Excellent/Good shape.
Conclusion : There is not sufficient
evidence to warrant the rejection of the claim that the percentage
of citizens who felt the economy was in Excellent/Good shape was
17%.
ii)
orchestra answered 2 years agoRelated Solutions
In a recent year, a poll asked 2157 random adult citizens of a large country how...
In a recent year, a poll asked 2157 random adult citizens of a
large country how they rated economic conditions. In the poll, 36%
rated the economy as Excellent/Good. A recent media outlet claimed
that percentage of citizens who felt the economy was in
Excellent/Good shape was 34%. Does the poll support this claim?
a) Let p be the proportion of adult citizens who felt the
economy was in Excellent/Good shape. What are the null and
alternative hypotheses for the...
In a recent year, a poll asked 2360 random adult citizens of a large country how...
In a recent year, a poll asked 2360 random adult citizens of a
large country how they rated economic conditions. In the poll,
28% rated the economy as Excellent/Good. A recent media outlet
claimed that the percentage of citizens who felt the economy was
in Excellent/Good shape was 25%. Does the poll support this
claim? a) Test the appropriate hypothesis. Find a 99% confidence
interval for the proportion of adults who rated the economy as
Excellent/Good. Check conditions. b) Does...
Assume a 2015 Gallup Poll asked a national random sample of 515 adult women to state...
Assume a 2015 Gallup Poll asked a national random sample of 515
adult women to state their current weight. Assume the mean weight
in the sample was ?¯=155.
We will treat these data as an SRS from a normally distributed
population with standard deviation ?=33 pounds.
Give a 99% confidence interval for the mean weight of adult
women based on these data. Enter the upper and lower values of your
confidence interval into the spaces provided rounded to two decimal...
n a recent poll, a random sample of adults in some country (18 years and older)...
n a recent poll, a random sample of adults in some country (18
years and older) was asked, "When you see an ad emphasizing that a
product is "Made in our country," are you more likely to buy it,
less likely to buy it, or neither more nor less likely to buy it?"
The results of the survey, by age group, are presented in the
following contingency table. Complete parts (a) through (c).
Purchase likelihood
18 dash 3418-34
35 dash...
A recent Gallup poll asked 1006 Americans, “During the past year, about how many books, either...
A recent Gallup poll asked 1006 Americans, “During the past
year, about how many books, either hardcover or paperback, did you
read all or part of the way through?” Results of the survey
indicated that x ¯ = 13.4 books and s = 16.6 books.
Construct a 99% confidence interval for the true mean number of
books Americans read either all or part of during the past
year.
A random sample of 1002 adults in a certain large country was asked "Do you pretty...
A random sample of 1002 adults in a certain large country was
asked "Do you pretty much think televisions are a necessity or a
luxury you could do without?" Of the 1002 adults surveyed, 516
indicated that televisions are a luxury they could do without.
Complete parts (a) through (e) below. Click here to view the
standard normal distribution table (page 1). LOADING... Click here
to view the standard normal distribution table (page 2). LOADING...
(a) Obtain a point estimate...
A random sample of 1008 adults in a certain large country was asked "Do you pretty...
A random sample of 1008 adults in a certain large country was
asked "Do you pretty much think televisions are a necessity or a
luxury you could do without?" Of the 1008 adults surveyed, 511
indicated that televisions are a luxury they could do without.
Complete parts (a) through (e) below.
Click here to view the standard normal distribution table (page
1). LOADING... Click here to view the standard normal distribution
table (page 2). LOADING...
(a) Obtain a point estimate...
A random sample of 1002 adults in a certain large country was asked "Do you pretty...
A random sample of 1002 adults in a certain large country was
asked "Do you pretty much think televisions are a necessity or a
luxury you could do without?" Of the 1002 adults surveyed, 516
indicated that televisions are a luxury they could do without.
Complete parts (a) through (e) below. Click here to view the
standard normal distribution table (page 1). LOADING... Click here
to view the standard normal distribution table (page 2). LOADING...
(a) Obtain a point estimate...
A random sample of 1001 adults in a certain large country was asked "Do you pretty...
A random sample of 1001 adults in a certain large country was
asked "Do you pretty much think televisions are a necessity or a
luxury you could do without?" Of the 1001 adults surveyed, 534
indicated that televisions are a luxury they could do without.
Complete parts (a) through (e) below.
a) Obtain a point estimate for the population proportion of
adults in the country who believe that televisions are a luxury
they could do without.
b) Verify that the...
A random sample of 1027 adults in a certain large country was asked "Do you pretty...
A random sample of 1027 adults in a certain large country was
asked "Do you pretty much think televisions are a necessity or a
luxury you could do without?" Of the 1027 adults surveyed, 517
indicated that televisions are a luxury they could do without.
Complete parts (a) through (e) below. Click here to view the
standard normal distribution table (page 1). LOADING... Click here
to view the standard normal distribution table (page 2). LOADING...
(a) Obtain a point estimate...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- You have invested 30 percent of your portfolio in Jacob, Inc., 40 percent is Bella Co.,...
- Parallel Arrays This question is in MindTap Cengage Summary In this lab, you use what you...
- 5. You have invested 30 percent of your portfolio in Jacob, Inc., 40 percent is Bella...
- JAVA Write a test program that prompts the user to enter a series of integers and...
- (2) Cite an example on how organizations like Google, Facebook, Youtube etc collect data for image...
- The legal landscape is perpetually changing. Psychologists must remain abreast of these changes to avoid potentially...
- We are evaluating a project that costs $1.68 million, has a six-year life, and has no...
ADVERTISEMENT