Explain what "95% confidence" means in a 95% confidence interval. What does "95% confidence" mean in...
Explain what "95% confidence" means in a 95% confidence interval. What does "95% confidence" mean in a 95% confidence interval? A. If 100 different confidence intervals are constructed, each based on a different sample of size n from the same population, then we expect 95 of the intervals to include the parameter and 5 to not include the parameter. B. The probability that the value of the parameter lies between the lower and upper bounds of the interval is 95%. The probability that it does not is 5%. C. The confidence interval includes 95% of all possible values for the parameter. D. The value of the parameter lies within 95% of a standard deviation of the estimate.
Homework Answers
Option - A) If 100 different confidence intervals are constructed , each based on a different sample of size n from the same population, then we expect 95 of the intervals to include parameter and 5 to not include the parameter.
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Explain what "95% confidence" means in a 95% confidence
interval. What does "95% confidence" mean in...
Let's say we have constructed a 95% confidence interval estimate for a population mean. Which of...
Let's say we have constructed a 95% confidence interval estimate for a population mean. Which of the following statements would be correct? A. We expect that 95% of the intervals so constructed would contain the true population mean. B. We are 95% sure that the true population mean lies either within the constructed interval or outside the constructed interval. C. Taking 100 samples of the same size, and constructing a new confidence interval from each sample, would yield five intervals...
Which statement is NOT true about confidence intervals? A) A confidence interval is an interval...
Which statement is NOT true about confidence intervals? A) A confidence interval is an interval of values computed from sample data that is likely to include the true population value B) An approximate formula for a 95% confidence interval is sample estimate ± margin of error. C) A confidence interval between 20% and 40% means that the population proportion lies between 20% and 40% D) A 99% confidence interval procedure has a higher probability of producing...
which of the following correctly describes a 95% confidence interval for a mean? Circle the correct...
which of the following correctly describes a 95% confidence interval for a mean? Circle the correct answer. e, A range within which 95% of all possible sample means fall An interval constructed using a procedure such that 95% of intervals constructed this way will contain the population mean. A range within which 90% of all data values in the population fall All of the above None of the above . ii. iii. iv. v.
Find an example of a confidence interval for a proportion in the media or scholarly literature...
Find an example of a confidence interval for a proportion in the media or scholarly literature (do not use a statistics textbook or website/article that is teaching or demonstrating statistics to find the example) At the very least it must include either the lower and upper bounds or a point estimate with a margin of error Make sure you have a Proportion confidence interval and NOT a CI for the mean, odds ratio, hazard ratio, or relative risk as these...
Find an example of a confidence interval for a proportion in the media or scholarly literature (d...
Find an example of a confidence interval for a proportion in the media or scholarly literature (do not use a statistics textbook or website/article that is teaching or demonstrating statistics to find the example). At the very least it must include either the lower and upper bounds or a point estimate with a margin of error. Make sure you have a Proportion confidence interval and NOT a CI for the mean, odds ratio, hazard ratio, or relative risk as these...
You want to estimate the mean IQ for a population of students with a 95% confidence...
You want to estimate the mean IQ for a population of students with a 95% confidence interval. Assume that the population standard deviation is known to be 15. If you want your estimate to be within 5 points of the value of the parameter, you will need a sample size of... (Round z to the nearest hundredth.)
Construct a 95% confidence interval to estimate the population mean using the data below. What assumptions...
Construct a 95% confidence interval to estimate the population mean using the data below. What assumptions need to be made about this population? x̅ = 38, s = 7.9, n = 24 1) The 95% confidence interval for the population mean is from a lower limit of ___ to an upper limit of ____ 2) What asssumption should be made a) The population follows the normal probability distribution b) The population follows the Student's t-distribution c) The population distribution is...
A 95% confidence interval for a population proportion p is found to be (0.52, 0.58). What...
A 95% confidence interval for a population proportion p is found to be (0.52, 0.58). What does this mean? A. There is a 95% probability that the actual value of p is between 52% and 58%. B. If many simple random samples of the same size were taken from the population, and a confidence interval were constructed for each one, then about 95% of them would contain the actual value of p. C. 95% of all sample proportions are between...
? What does it mean if you use a sample of size 50 to construct a...
?
What does it mean if you use a sample of size 50 to construct a 95% Confidence interval for a population proportion? O A. If you construct 100 such intervals in the same manner, you would expect that 95 of the constructed intervals would contain the true population proportion. OB. The true population proportion is between 90% and 100%. OC. The true population proportion is less than 95% because the sample size is large enough to support this conclusion...
one can calculate the 95% confidence interval for the mean with the population standard deviation knowing...
one can calculate the 95% confidence interval for the mean with the population standard deviation knowing this gives us an upper and lower confidence limit what happens if we decide to calculate the 99% confidence interval describe how the increase in the confidence level has changed the width of the confidence interval the same for the confidence interval set at 80% including example with actual numeric value for the intervals and you're supposed to help with your explanations
which of the following correctly describes a 95% confidence interval for a mean? Circle the correct answer. e, A range within which 95% of all possible sample means fall An interval constructed using a procedure such that 95% of intervals constructed this way will contain the population mean. A range within which 90% of all data values in the population fall All of the above None of the above . ii. iii. iv. v.
Find an example of a confidence interval for a proportion in the media or scholarly literature (do not use a statistics textbook or website/article that is teaching or demonstrating statistics to find the example) At the very least it must include either the lower and upper bounds or a point estimate with a margin of error Make sure you have a Proportion confidence interval and NOT a CI for the mean, odds ratio, hazard ratio, or relative risk as these...
You want to estimate the mean IQ for a population of students with a 95% confidence interval. Assume that the population standard deviation is known to be 15. If you want your estimate to be within 5 points of the value of the parameter, you will need a sample size of... (Round z to the nearest hundredth.)
?
What does it mean if you use a sample of size 50 to construct a 95% Confidence interval for a population proportion? O A. If you construct 100 such intervals in the same manner, you would expect that 95 of the constructed intervals would contain the true population proportion. OB. The true population proportion is between 90% and 100%. OC. The true population proportion is less than 95% because the sample size is large enough to support this conclusion...
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