1- You want to estimate the proportion p of defective light bulbs produced in a factory....
1- You want to estimate the proportion p of defective light bulbs produced in a factory. Suppose you want to estimate p within .01 from the sample proportion X of defective items at 95 percent level of confidence. How large a sample would you take? (Round upward only.)
Required Sample Size n =
2- You want to estimate the proportion p of people who oppose capital punishment. To estimate p within .02 from the sample proportion Xwith 99 percent level of confidence, how large a sample will you have to take? (Round upward only.)
Required Sample Size n =
Homework Answers
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1- You want to estimate the proportion p of defective light
bulbs produced in a factory....
a. Assume that a sample is used to estimate a population proportion p. Find the 95%...
a. Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 198 with 42 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 95% C.I. = b. A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 0.5% margin of error at a 99% confidence...
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you...
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 72%. You would like to be 99% confident that your esimate is within 5% of the true population proportion. How large of a sample size is required? n= Do not round mid-calculation. Use a critical value accurate to three decimal places.
You want to obtain a sample to estimate a population proportion. At this point in time,...
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 99% confident that your esimate is within 1% of the true population proportion. How large of a sample size is required? n =
You want to obtain a sample to estimate a population proportion. At this point in time,...
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 99% confident that you estimate is within 3% of the true population proportion. How large of a sample size is required? n =
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you...
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p∗=16%p∗=16%. You would like to be 99% confident that your estimate is within 5% of the true population proportion. How large of a sample size is required?
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you...
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 35%. You would like to be 99% confident that your estimate is within 1% of the true population proportion. How large of a sample size is required? n=
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you...
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 17%. You would like to be 99% confident that your estimate is within 1% of the true population proportion. How large of a sample size is required? n =
You want to obtain a sample to estimate a population proportion. At this point in time,...
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 99% confident that you estimate is within 2% of the true population proportion. How large of a sample size is required? Hint: Textbook Video [+] N-
The estimate of the population proportion is to be within plus or minus .05, with a...
The estimate of the population proportion is to be within plus or minus .05, with a 99 percent level of confidence. The best estimate of the population proportion is .12. How large a sample is required? (Round up your answer to the next whole number.) Sample size
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you...
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.78. You would like to be 99% confident that your esimate is within 4% of the true population proportion. How large of a sample size is required?
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 99% confident that your esimate is within 1% of the true population proportion. How large of a sample size is required? n =
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 99% confident that you estimate is within 2% of the true population proportion. How large of a sample size is required? Hint: Textbook Video [+] N-
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