Question

Assume that a sample is used to estimate a population proportion p. Find the 90% confidence...

Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval for a sample of size 230 with 12% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.

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

Homework Answers

Answer #1

Given that the sample size is N = 230 and the sample proportion is p^ = 0.12 so, the confidence interval is calculated as:

Where Zc is the Z-critical value at given confidence interval which is calculated using excel formula for normal distribution. The formula used is =NORM.S.INV(0.95) the Zc computed as 1.645

Now the confidence interval is calculated as:

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
Assume that a sample is used to estimate a population proportion p. Find the 90% confidence...
Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval for a sample of size 395 with 267 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. =
Assume that a sample is used to estimate a population proportion p. Find the 90% confidence...
Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval for a sample of size 347 with 68% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. =
Assume that a sample is used to estimate a population proportion p. Find the 99% confidence...
Assume that a sample is used to estimate a population proportion p. Find the 99% confidence interval for a sample of size 321 with 230 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. =
1. Assume that a sample is used to estimate a population proportion p. Find the 80%...
1. Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample of size 399 with 303 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 80% C.I. = 2. Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample of size 315 with 18.1% successes. Enter your answer as an open-interval...
Assume that a sample is used to estimate a population proportion p. Find the 90% confidence...
Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval for a sample of size 248 with 84 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 90% C.I. = _______________________ Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
Assume that a sample is used to estimate a population proportion p. Find the 90% confidence...
Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval for a sample of size 247 with 146 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 90% C.I. = Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
Assume that a sample is used to estimate a population proportion p. Find the 98% confidence...
Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval for a sample of size 194 with 21% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.
Assume that a sample is used to estimate a population proportion p. Find the 98% confidence...
Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval for a sample of size 176 with 114 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.
Assume that a sample is used to estimate a population proportion p. Find the 99.9% confidence...
Assume that a sample is used to estimate a population proportion p. Find the 99.9% confidence interval for a sample of size 333 with 163 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.
Assume that a sample is used to estimate a population proportion p. Find the 95% confidence...
Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 395 with 73% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. =
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT