Question

A recent poll of 120 adults who frequent the local farmer’s market found that 54 have...

A recent poll of 120 adults who frequent the local farmer’s market found that 54 have purchased reusable cloth bags for their groceries. Based on these data, construct and interpret a 95% confidence interval of the proportion of adults who have purchased reusable cloth bags?

1.Type the lower and upper bounds of the confidence interval.

2.Type the interpretation of the confidence interval.

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

Homework Answers

Answer #1

1. Bounds of confidence interval

Lower bound = 0.361

Upper bound = 0.539

2.

We are 95% confident that true population proportion is lies in the interval (0.361,0.539)

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
An interactive poll found that 386 of 2 comma 324 adults aged 18 or older have...
An interactive poll found that 386 of 2 comma 324 adults aged 18 or older have at least one tattoo. ?(a) Obtain a point estimate for the proportion of adults who have at least one tattoo. ?(b) Construct a 95?% confidence interval for the proportion of adults with at least one tattoo. ?(c) Construct a 98?% confidence interval for the proportion of adults with at least one tattoo. ?(d) What is the effect of increasing the level of confidence on...
An interactive poll found that 334 of 2,302 adults aged 18 or older have at least...
An interactive poll found that 334 of 2,302 adults aged 18 or older have at least one tattoo. ​(a) Obtain a point estimate for the proportion of adults who have at least one tattoo. ​(b) Construct a 95​% confidence interval for the proportion of adults with at least one tattoo. A. Lower​ bound: ______ Upper​ bound: _____ ​(Round to three decimal places as​ needed.) B. The requirements for constructing a confidence interval are not satisfied. ​(c) Construct a 99​% confidence...
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
An interactive poll found that 324 of 2,266 adults aged 18 or older have at least...
An interactive poll found that 324 of 2,266 adults aged 18 or older have at least one tattoo. ?(a) Obtain a point estimate for the proportion of adults who have at least one tattoo. ?(b) Construct a 90 ?% confidence interval for the proportion of adults with at least one tattoo. ?(c) Construct a 98 ?% confidence interval for the proportion of adults with at least one tattoo. ? (d) What is the effect of increasing the level of confidence...
In a survey of 2241 U.S Adults in a recent year, 1322 say they have made...
In a survey of 2241 U.S Adults in a recent year, 1322 say they have made a new years resolution. This is a proportion confidence interval problem. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence interval.
In a survey of 2572 adults in a recent​ year, 1308 say they have made a...
In a survey of 2572 adults in a recent​ year, 1308 say they have made a New​ Year's resolution. Construct​ 90% and​ 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. (round to three decimal places as needed) The​ 90% confidence interval for the population proportion p is? The 95% confidence interval for the population proportion p is?
In a survey of 2460 adults in a recent​ year, 1491 say they have made a...
In a survey of 2460 adults in a recent​ year, 1491 say they have made a New​ Year's resolution. Construct​ 90% and​ 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. The​ 90% confidence interval for the population proportion p is
In a survey of 2363 adults in a recent​ year, 1366 say they have made a...
In a survey of 2363 adults in a recent​ year, 1366 say they have made a New​ Year's resolution. Construct​ 90% and​ 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. A. The​ 90% confidence interval for the population proportion p is (__,__)
In a recent poll of 50 randomly selected adults in the U.S., 14 were able to...
In a recent poll of 50 randomly selected adults in the U.S., 14 were able to name ten or more presidents. a) What is the sample proportion? b) What is the margin of error for a 95% confidence interval? (round to three places) c) What is the 95% confidence interval for this scenario? (round to three places) d) Would you support 35% as possible population proportion of U.S. adults who can name ten or more presidents? Why or why not?
In a recent poll of 900 randomly selected adults, 37% reported that they could not swim...
In a recent poll of 900 randomly selected adults, 37% reported that they could not swim 24 yards (the length of a typical gymnasium lap pool). Report the 95% confidence interval for the proportion of adults who self-report that they cannot swim 24 yards. Round final calculations to the nearest tenth of a percent.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT