Question

A researcher wants to construct a 95% confidence interval for the proportion of elementary school students...

A researcher wants to construct a 95% confidence interval for the proportion of elementary school students in Seward County who receive free or reduced-price school lunches. What sample size is needed so that the confidence interval will have a margin of error of 0.03?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

No information about p so assume p =0.5

Answer : Sample size ( n ) = 1068

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Reading proficiency: An educator wants to construct a 98% confidence interval for the proportion of elementary...
Reading proficiency: An educator wants to construct a 98% confidence interval for the proportion of elementary school children in Colorado who are proficient in reading. (a) The results of a recent statewide test suggested that the proportion is 0.61 Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.03?
Reading proficiency: An educator wants to construct a 99% confidence interval for the proportion of elementary...
Reading proficiency: An educator wants to construct a 99% confidence interval for the proportion of elementary school children in Colorado who are proficient in reading. (b) Estimate the sample size needed if no estimate of P is available. A sample of __ elementary school children is needed to obtain a 99% confidence interval with a margin of error of 0.03.
1)A sample of size  is drawn from a population whose standard deviation is  Find the margin of error...
1)A sample of size  is drawn from a population whose standard deviation is  Find the margin of error for a  confidence interval for μ. 2)A researcher wants to construct a 98% confidence interval for the proportion of elementary school students in Seward County who receive free or reduced-price school lunches. What sample size is needed so that the confidence interval will have a margin of error of 0.09? 3)An Internet service provider sampled 540 customers and found that 55 of them experienced an...
How's the economy? A pollster wants to construct a 95 % confidence interval for the proportion...
How's the economy? A pollster wants to construct a 95 % confidence interval for the proportion of adults who believe that economic conditions are getting better. (a) A poll taken in July 2010 estimates this proportion to be 0.41 . Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.02 ? (b) Estimate the sample size needed if no estimate of p is available. Part 1 of 2 (a)...
How's the economy? A pollster wants to construct a 99.5% confidence interval for the proportion of...
How's the economy? A pollster wants to construct a 99.5% confidence interval for the proportion of adults who believe that economic conditions are getting better. Part: 0 / 20 of 2 Parts Complete Part 1 of 2 (a) A poll taken in July 2010 estimates this proportion to be 0.37. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.03? A sample of __ adults is needed to obtain...
Reading proficiency: An educator wants to construct a 98% confidence interval for the proportion of elementary...
Reading proficiency: An educator wants to construct a 98% confidence interval for the proportion of elementary schoolchildren in Colorado who are proficient in reading. a. (1pt) The results of a recent statewide test suggested that the proportion is 0.70. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.05? b. (1pt) Estimate the sample size needed if no estimate of p is available. c. (2pt) If the educator wanted...
A pollster wants to construct a 95% confidence interval for the proportion of adults who believe...
A pollster wants to construct a 95% confidence interval for the proportion of adults who believe that economic conditions are getting better. A Gallup poll taken in July 2010 estimates this proportion to be 0.33. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.034 ? Write only an integer as your answer .
A pollster wants to construct a 95% confidence interval for the proportion of adults who believe...
A pollster wants to construct a 95% confidence interval for the proportion of adults who believe that economic conditions are getting better. A Gallup poll taken in July 2010 estimates this proportion to be 0.33. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.010 ? Write only an integer as your answer.
A sociologist wants to construct a 95% confidence interval for the proportion of children aged 8–12...
A sociologist wants to construct a 95% confidence interval for the proportion of children aged 8–12 living in New York who own a cell phone. A survey estimated the nationwide proportion to be 0.56. What sample size is needed so that the confidence interval will have a margin of error of 0.02? (Provide your answer as a whole number).
A poll wants to construct a 95% confidence interval for the proportion of adults who believe...
A poll wants to construct a 95% confidence interval for the proportion of adults who believe that economic conditions are getting better. A poll taken in July estimates this proportion to be 0.33 using this estimate what sample sizes needed so that the confidence interval will have a margin of error of .081
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT