Question

At a given sample size and level of confidence, the smaller the population standard deviation σ,...

At a given sample size and level of confidence, the smaller the population standard deviation σ, the wider and thus the less precise the confidence interval estimate of µ is.

True or False

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
29. When the level of confidence and the sample size remain the same, a confidence interval...
29. When the level of confidence and the sample size remain the same, a confidence interval for a population mean µ will be _____, when the sample standard deviation s is smaller than when s is larger. A. narrower B. sometimes wider, sometimes narrower C. wider D. the same
The width of a confidence interval estimate for a population mean when the population standard deviation...
The width of a confidence interval estimate for a population mean when the population standard deviation is known will (A)   become narrower if the size of the sample being used is increased and the confidence level is unchanged. (B)    not change if only the sample size is increased. (C)    become wider if the sample size remains the same and the confidence level decreases. (D)   become narrower if the size of the sample is decreased and the confidence level is unchanged....
Mean Sample standard deviation Population standard deviation Sample size Confidence level Confidence interval 100 20 na...
Mean Sample standard deviation Population standard deviation Sample size Confidence level Confidence interval 100 20 na 25 95 % 100 20 na 25 90 % 100 40 na 25 90 % 100 40 n.a. 16 90 % 100 n.a. 40 16 90 % How does the confidence level affect the width of the confidence interval, other things equal? How does the size of the standard deviation affect the width of the confidence interval, other things equal? How does sample size...
In constructing a 99% confidence level estimate of the mean when the population standard deviation (σ)...
In constructing a 99% confidence level estimate of the mean when the population standard deviation (σ) is unknown and the sample size is 35, what will be your t score used in the formula?
A sample​ mean, sample​ size, population standard​ deviation, and confidence level are provided. Use this information...
A sample​ mean, sample​ size, population standard​ deviation, and confidence level are provided. Use this information to complete parts​ (a) through​ (c) below. x =2323​, n=3434​, σ=55​, confidence level=95​% a. Use the​ one-mean z-interval procedure to find a confidence interval for the mean of the population from which the sample was drawn. The confidence interval is from__ to__ b.Obtain the margin of error by taking half the length of the confidence interval. What is the length of the confidence​ interval?...
A sample​ mean, sample​ size, population standard​ deviation, and confidence level are provided. Use this information...
A sample​ mean, sample​ size, population standard​ deviation, and confidence level are provided. Use this information to complete parts​ (a) through​ (c) below. x=54, n=14, σ=5, confidence level=99% A. Use the​ one-mean z-interval procedure to find a confidence interval for the mean of the population from which the sample was drawn. The confidence interval is from ___to___ B. Obtain the margin of error by taking half the length of the confidence interval. What is the length of the confidence​ interval?...
1)Given a sample mean is82, the sample size is 100and the population standard deviation is 20....
1)Given a sample mean is82, the sample size is 100and the population standard deviation is 20. Calculate the margin of error to 2 decimalsfor a 90% confidence level. 2)Given a sample mean is 82, the sample size is 100 and the population standard deviation is 20. Calculate the confidence interval for 90% confidence level. What is the lower limit value to 2 decimals? 3)Given a sample mean is 82, the sample size is 100 and the population standard deviation is...
true or false When the level of confidence and sample proportion p remain the same, a...
true or false When the level of confidence and sample proportion p remain the same, a confidence interval for a population proportion p based on a sample of n = 200 will be narrower than a confidence interval for p based on a sample of n = 100. When the level of confidence and the sample size remain the same, a confidence interval for a population mean µ will be narrower, when the sample standard deviation s is larger than...
Suppose we know that the population standard deviation for wages (σ) is $15. A random sample...
Suppose we know that the population standard deviation for wages (σ) is $15. A random sample of n = 900 results in a sample mean wage of $50. (10 points) Provide 95% confidence interval estimate of µ. Interpret the result. What is the value of the margin of error? Provide 90% confidence interval estimate of µ. What is the value of the margin of error? Provide 99% confidence interval estimate of µ. What is the value of the margin of...
Which of the following is TRUE? A. The confidence interval is narrower if the sample size...
Which of the following is TRUE? A. The confidence interval is narrower if the sample size is smaller. B. The confidence interval is narrower if the level of significance is smaller. C. The confidence interval is wider if the level of confidence level is larger. D. The confidence interval is wider if the sample size is larger.