Question

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.

(E)    become wider if the sample size increases and the confidence level is unchanged.

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

Homework Answers

Answer #1

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
Using an alpha = 0.05 a confidence interval for a population mean is determined to be...
Using an alpha = 0.05 a confidence interval for a population mean is determined to be 3.65 to 3.75. If the level of significance is decreased, the interval for the population mean Select one: a. becomes narrower b. becomes wider c. does not change d. increases or decreases depending on the value of the population mean
If you construct a 90% confidence interval for the population mean instead of a 95% confidence...
If you construct a 90% confidence interval for the population mean instead of a 95% confidence interval and the sample size is smaller for the 90%, but with everything else being the same, the confidence interval would: a. remain the same b. become narrower c. become wider d. cannot tell without further information.
When constructing a confidence interval estimate for a population mean​ (when the standard deviation of the...
When constructing a confidence interval estimate for a population mean​ (when the standard deviation of the population is​ known), what is the calculation that has to be made to obtain the error​ margin? A. You multiply the number of standard deviations by the standard deviation of the sampling distribution of sample means. B. You subtract the sample mean from the population mean and then divide by the standard deviation of the population. C. You divide the standard deviation of the...
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
As one increase the size of the sample used to construct a confidence interval, the width...
As one increase the size of the sample used to construct a confidence interval, the width of the confidence interval Group of answer choices decreases shifts to the left remains the same increases
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...
A random sample of 14 observations is used to estimate the population mean. The sample mean...
A random sample of 14 observations is used to estimate the population mean. The sample mean and the sample standard deviation are calculated as 158.4 and 30.10, respectively. Assume that the population is normally distributed. [You may find it useful to reference the t table.] a. Construct the 90% confidence interval for the population mean. (Round intermediate calculations to at least 4 decimal places. Round "t" value to 3 decimal places and final answers to 2 decimal places.) b. Construct...
The width of a confidence interval will be: Narrower for 98 percent confidence than for 90...
The width of a confidence interval will be: Narrower for 98 percent confidence than for 90 percent confidence. Wider for a sample size of 64 than for a sample size of 36. Wider for a 99 percent confidence than for 95 percent confidence. Narrower for a sample size of 25 than for a sample size of 36. None of these.
For each of the following situations, state what happens to the width of the confidence interval....
For each of the following situations, state what happens to the width of the confidence interval. Justify your answers. A) Population standard deviation increases B) Sample size decreases (assuming CLT still holds) C) Confidence level decreases D) Sample mean increases
You are constructing a 95% confidence interval for the mean of a normal population. If you...
You are constructing a 95% confidence interval for the mean of a normal population. If you increase your sample size from n to 4n, the width of the confidence interval a) becomes two times wider b) becomes two times narrower c) becomes four times narrower d) becomes four time wider e) cannot determine from this information Can somebody explain please? Will upvote :) Thank you
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT