ZuoTi.Pro
Question

In a prior sample of us adults the center for disease control found that 10% of...

In a prior sample of us adults the center for disease control found that 10% of the people in this sample had pin worms but the margin of error for the population estimate was too large. They want the margin of error to be 2% at the 95% confidence level. a) what is the minimum sample size required to obtain this type of accuracy? Use the prior sample proportion in your calculation b) what is the minimum sample size required to obtain this type of accuracy when you assume no prior knowledge of this sample proportion

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
In a prior sample of us adults the center for disease control found that 10% of...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Pinworm: In a prior sample of U.S. adults, the Center for Disease Control (CDC), found that...

    Pinworm: In a prior sample of U.S. adults, the Center for Disease Control (CDC), found that 10% of the people in this sample had pinworm but the margin of error for the population estimate was too large. They want an estimate that is in error by no more than 2.5 percentage points at the 90% confidence level. Enter your answers as whole numbers. (a) What is the minimum sample size required to obtain this type of accuracy? Use the prior...

  • Corn: In a prior sample of corn, farmer Carl finds that 16% of the sample has...

    Corn: In a prior sample of corn, farmer Carl finds that 16% of the sample has worms but the margin of error for his population estimate was too large. He wants an estimate that is in error by no more than 2.5 percentage points at the 95% confidence level. Enter your answers as whole numbers. (a) What is the minimum sample size required to obtain this type of accuracy? Use his prior sample proportion in your calculation. The minimum sample...

  • In a prior sample of corn, farmer Carl finds that 16% of the sample has worms...

    In a prior sample of corn, farmer Carl finds that 16% of the sample has worms but the margin of error for his population estimate was too large. He wants an estimate that is in error by no more than 1.5 percentage points at the 90% confidence level.   (a) What is the minimum sample size required to obtain this type of accuracy? Use his prior sample proportion in your calculation. The minimum sample size is ____ ears of corn. (b)...

  • Last year a sample of us adults showed that 14% went shopping on Thanksgiving Day this...

    Last year a sample of us adults showed that 14% went shopping on Thanksgiving Day this year a group wants to make a 90% confidence interval of all US adults that are going shopping this year the group wants the margin of error to be 3% a what is the minimum sample size required to obtain this type of accuracy use the prior year's the ample proportion in your calculation

  • Fair Coin? In a series of 100 tosses of a token, the proportion of heads was...

    Fair Coin? In a series of 100 tosses of a token, the proportion of heads was found to be 0.58. However, the margin of error for the estimate on the proportion of heads in all tosses was too big. Suppose you want an estimate that is in error by no more than 0.05 at the 95% confidence level. (a) What is the minimum number of tosses required to obtain this type of accuracy? Use the prior sample proportion in your...

  • The center for Disease Control and Prevention wishes to estimate what proportion of the U. S....

    The center for Disease Control and Prevention wishes to estimate what proportion of the U. S. population gets the flu each year. In a random sample of adults in the U.S. collected in the year 2012, 12% got the flu that year. (a) Based on the information from the past sample in 2012, how large of a sample is needed to achieve a 0.02 margin of error with a 95% confidence level? (b) Using the most conservative approach, how large...

  • 1. The center for Disease Control and Prevention wishes to estimate what proportion of the U....

    1. The center for Disease Control and Prevention wishes to estimate what proportion of the U. S. population gets the flu each year. In a random sample of adults in the U.S. collected in the year 2012, 12% got the flu that year. (a) Based on the information from the past sample in 2012, how large of a sample is needed to achieve a 0.02 margin of error with a 95% confidence level? (b) Using the most conservative approach, how...

  • 7) In a recent Pew Research Center survey (Oct 17, 2019) of 3500 U.S. adults, 1890...

    7) In a recent Pew Research Center survey (Oct 17, 2019) of 3500 U.S. adults, 1890 adults said congress should continue with impeachment proceedings. 18 points a) Show work for finding the point estimate, p b) Find the margin of error, E, using a 95% confidence level and round to 3 decimal places. c) Find a 95% confidence interval for the population proportion from this survey, show all values used and round to 3 decimals. d) Interpret your answer. e)...

  • 1. In 2010, TIME and the Pew Research Center collaborated on a survey of 2622 U.S....

    1. In 2010, TIME and the Pew Research Center collaborated on a survey of 2622 U.S. adults asking them, “Is marriage becoming obsolete?” The number of people who responded with a “yes” was 1018. We want to use these data to estimate the true proportion of U.S. adults who believe marriage is becoming obsolete. a. Calculate a 95% confidence interval for this problem. b. Interpret the 95% confidence interval. c. If the researcher wanted the margin of error to be...

  • 1. The Centers for Disease Control reported the percentage of people 18 years of age and...

    1. The Centers for Disease Control reported the percentage of people 18 years of age and older who smoke (CDC website, December 14, 2014). Suppose that a study designed to collect nevw data on smokers and nonsmokers uses a preliminary estimate of the proportion who smoke of 0.30. a) b) c) How large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of 0.02? Use 95% confidence Assume that the...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT