Question

In a survey of 349 teenagers in the United States, 14% said thatt they worked during...

In a survey of 349 teenagers in the United States, 14% said thatt they worked during the their summer vacation.

What is the margin of error for the survey?

±±    

Give an interval that is likely to contain the exact percent of all U.S. teenagers who worked during their summer vacation?

Between     % and     %

Homework Answers

Answer #1

here

P=proportion worker say that they are interested in doing work in summer vacation out of total number of survey n=349

Here

p=0.14 n=349

What is the margin of error for the survey?

And

#here we considere the 95%CI

ME=margin of error

ME=±

%

=1-0.95=0.05

=Z0.025=1.96

value of z is obtained from standard normal table

ME=0.019

95% interval that is likely to contain the exact percent of all U.S. teenagers who worked during their summer vacation is

(P-ME,P+ME)

(0.14-0.019,0.14+0.019)

(0.121,0.159)

Between 12.1 % and 15.9 %

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A recent survey of 1000 United Kingdom music fans aged 14 to 64 revealed that roughly...
A recent survey of 1000 United Kingdom music fans aged 14 to 64 revealed that roughly 30% of the teenage music fans are listening to streamed music on their computer every day. You decide to take a sample of 20 U.S teenage music fans. What is the probability that at least one of the 20 children listen to streamed music? Assume for now that US teenagers behave like UK teenagers in terms of how regularly they listen to streamed music?...
In a certain year, 29% of all teenagers in the United States had checking accounts. Your...
In a certain year, 29% of all teenagers in the United States had checking accounts. Your bank, TeenChex Inc., is interested in targeting teenagers who do not already have a checking account. (a) If TeenChex selects a random sample of 2,000 teenagers, what number of teenagers without checking accounts can it expect to find? teenagers What is the standard deviation σ of this number? (Round the standard deviation to one decimal place.) σ =   (b) Fill in the missing quantities....
Each of the students was asked whether or not they were employed during the previous summer....
Each of the students was asked whether or not they were employed during the previous summer. 472 of the male students and 588 of the female students said that they had worked during the previous summer. Give a 80% confidence interval for the difference between the proportions of male and female students who were employed during the summer . Step 1 of 3 : Find the point estimate that should be used in constructing the confidence interval. Round your answer...
The Principal Financial Group conducted a survey of 1172 employees in the United States between July...
The Principal Financial Group conducted a survey of 1172 employees in the United States between July and August of 2010, and asked if they were currently participating in the employer sponsored automatic payroll deduction for a 401k plan to save for retirement. Of the 1172 employees surveyed, 27% indicated they were participating. The Principal Group reported that 27% of all employees in the United States participate in automatic payroll deduction for a 401k plan to save for retirement with a...
In a survey of 1000 large corporations, 258 said that, given a choice between a job...
In a survey of 1000 large corporations, 258 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job. (a) Let p represent the proportion of all corporations preferring a nonsmoking candidate. Find a point estimate for p. (Round your answer to four decimal places.) (b) Find a 0.95 confidence interval for p. (Round your answers to three decimal places.) lower limit     upper limit     (c) As a news writer,...
A 2004 Gallup survey interviewed a nationally representative random sample of 500 teenagers aged 13 to...
A 2004 Gallup survey interviewed a nationally representative random sample of 500 teenagers aged 13 to 17; 51 acknowledged having smoked in the past week. (a) What parameter are we interested in? n, the number of teenagers in the sample p, the proportion of the U.S. population who are aged 13 to 17 p, the proportion of teenagers aged 13 to 17 who acknowledge having smoked in the week before their interview n, the number of people who smoke Correct:...
In a survey of 800 college students in the United States, 624 indicated that they believe...
In a survey of 800 college students in the United States, 624 indicated that they believe that a student or faculty member on campus who uses language considered racist, sexist, homophobic, or offensive should be subject to disciplinary action. Assuming that the sample is representative of college students in the United States, construct a 95% confidence interval for the proportion of college students who have this belief. (Use a table or technology. Round your answers to three decimal places.) (...
A survey revealed that 23% percent of 461 respondents said they had in the past sold...
A survey revealed that 23% percent of 461 respondents said they had in the past sold unwanted gifts over the Internet. Use this information to construct a 95% confidence interval for the population proportion who sold unwanted gifts over the Internet, rounding your margin of error to the nearest hundredth. (Round your answers to two decimal places.)
Suppose in a survey of 900 randomly selected student, 432 said they favored chocolate ice cream....
Suppose in a survey of 900 randomly selected student, 432 said they favored chocolate ice cream. A. Find a 90% confidence interval for the proportion of students who favor chocolate ice cream. B. What sample size is needed if we want 90% confidence with a margin of error of 1%? SHOW ALL WORK!
In a recent poll of 100 randomly selected adults in the United States, 82 had obtained...
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...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT