At a confidence level of 95% a confidence interval for a population proportion is determined to...
At a confidence level of 95% a confidence interval for a population proportion is determined to be 0.65 to 0.75. If the sample size had been larger and the estimate of the population proportion the same, this 95% confidence interval estimate as compared to the first interval estimate would be
Group of answer choices
narrower.
the same.
wider.
Homework Answers
solution
95% confidence interval estimate as compared to the first interval estimate would be
narrower
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At a confidence level of 95% a confidence interval for a
population proportion is determined to...
3. A 95% confidence interval for a population proportion yielded the interval (.245, .355). Compute the...
3. A 95% confidence interval for a population proportion yielded the interval (.245, .355). Compute the margin of error. Compute the sample proportion. Will a 99% confidence interval be wider or narrower? Explain why or why not.
A 95% confidence interval for a population mean is determined to be 100 to 120. For...
A 95% confidence interval for a population mean is determined to be 100 to 120. For the same data, if the confidence coefficient is reduced to .90, the confidence interval for u a. does not change. b. becomes narrower. c. becomes wider. d. becomes 100.1 to 120.1.
what i currently have is wrong...thanks in advance! A 95% confidence interval for a population proportion...
what i currently have is wrong...thanks in advance!
A 95% confidence interval for a population proportion was constructed using a sample proportion from a random sample. Which of the following statements are correct? Select all that apply If we were to use a 90% confidence level, the confidence interval from the same data would produce an interval wider than the 95% confidence interval. There is a 95% chance that the 95% confidence interval actually contains the population proportion. We don't...
Based on a random sample of 120 rhesus monkeys, a 95% confidence interval for the proportion...
Based on a random sample of 120 rhesus monkeys, a 95% confidence interval for the proportion of rhesus monkeys that live in a captive breeding facility and were assigned to research studies is (0.67, 0.83). Which of the following is true? A. If we used a different confidence level, the point estimate would remain in the center of the confidence interval. B. A larger sample size would yield a wider confidence interval. C. The margin of error for the confidence...
Need help with study guide 8 A 95% confidence interval estimate for a population mean u...
Need help with study guide
8 A 95% confidence interval estimate for a population mean u is determined to be 75.38 to 86.52. If the confidence level is reduced to 90%, the confidence interval for u e. becomes wider f. remains the same g. becomes narrower h. none of the above answers is correct
Suppose you construct a 96% confidence interval for a population mean from a normal distribution with...
Suppose you construct a 96% confidence interval for a population
mean from a normal distribution with known
.
Scenario 1: If you increase the size of the sample while keeping
the same 95% level of confidence, how would your confidence
interval be affected? Circle answer.
a. would be wider
b. would be narrower
c. there would be no change
d. no way to know without additional information
Scenario 2: If you increase the level of confidence from 96% to
99%...
11. [6 points] Using a sample of 100 children, a 95% confidence interval for the proportion...
11. [6 points] Using a sample of 100 children, a 95% confidence interval for the proportion of children under the age of 18 who had asthma was constructed to be (0.085,6.23) a) Which of the following would produce a confidence interval which is narrower than the constructed 95% confidence interval? Sample 150 children rather than 100, (Maintain the confidence level at 95%) Sample only 80 children rather than 100, (Maintain the confidence level at 95%) . (b) Which of the...
when the level of confidence and sample proportion remain the same, a confidence interval for a...
when the level of confidence and sample proportion remain the same, a confidence interval for a population proportion based on a sample of n=200 will be narrower than a confidence interval based in a sample of n=100. True or False
a. You wish to compute the 95% confidence interval for the population proportion. How large a...
a. You wish to compute the 95% confidence interval for the population proportion. How large a sample should you draw to ensure that the sample proportion does not deviate from the population proportion by more than 0.12? No prior estimate for the population proportion is available. Round intermediate calculations to at least 4 decimal places and "z" value to 3 decimal places. Round up your answer to the nearest whole number.) Sample Size - b. A business student is interested...
A newspaper conducts a poll to determine the proportion of voters who favor passage of a...
A newspaper conducts a poll to determine the proportion of voters who favor passage of a new handgun safety law. From the poll results, a 95% confidence interval estimate of the proportion is found: (0.514, 0.574). What proportion of those polled favored the safety law? (think point estimate) Answer: What was the margin of error for their results? Answer What was the margin of error for their results? Answer: If the confidence level was raised to 98%, but the sample...
A 95% confidence interval for a population mean is determined to be 100 to 120. For the same data, if the confidence coefficient is reduced to .90, the confidence interval for u a. does not change. b. becomes narrower. c. becomes wider. d. becomes 100.1 to 120.1.
what i currently have is wrong...thanks in advance!
A 95% confidence interval for a population proportion was constructed using a sample proportion from a random sample. Which of the following statements are correct? Select all that apply If we were to use a 90% confidence level, the confidence interval from the same data would produce an interval wider than the 95% confidence interval. There is a 95% chance that the 95% confidence interval actually contains the population proportion. We don't...
Need help with study guide
8 A 95% confidence interval estimate for a population mean u is determined to be 75.38 to 86.52. If the confidence level is reduced to 90%, the confidence interval for u e. becomes wider f. remains the same g. becomes narrower h. none of the above answers is correct
Suppose you construct a 96% confidence interval for a population
mean from a normal distribution with known
.
Scenario 1: If you increase the size of the sample while keeping
the same 95% level of confidence, how would your confidence
interval be affected? Circle answer.
a. would be wider
b. would be narrower
c. there would be no change
d. no way to know without additional information
Scenario 2: If you increase the level of confidence from 96% to
99%...
11. [6 points] Using a sample of 100 children, a 95% confidence interval for the proportion of children under the age of 18 who had asthma was constructed to be (0.085,6.23) a) Which of the following would produce a confidence interval which is narrower than the constructed 95% confidence interval? Sample 150 children rather than 100, (Maintain the confidence level at 95%) Sample only 80 children rather than 100, (Maintain the confidence level at 95%) . (b) Which of the...
A newspaper conducts a poll to determine the proportion of voters who favor passage of a new handgun safety law. From the poll results, a 95% confidence interval estimate of the proportion is found: (0.514, 0.574). What proportion of those polled favored the safety law? (think point estimate) Answer: What was the margin of error for their results? Answer What was the margin of error for their results? Answer: If the confidence level was raised to 98%, but the sample...
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