2. Will the following factors increase the length of a confidence interval? Why?
a. Decreasing the sample proportion
b. Increasing the level of confidence.
c. Increasing the sample size.
a) By decreasing the sample proportion, the length of the confidence interval will also be decreased.
b) By increasing the confidence level, the margin of error also increases. So that the length of the confidence interval also increases.
c) By increasing the sample size, the Margin of error decreases. So that the length of the confidence interval also decreases.
2. Will the following factors increase the length of a confidence interval? Why? a. Decreasing the...
12. What is one way to increase the length of any confidence interval? (a) Increase the sample size (b) Use a smaller confidence level (c) Both (a) and (b) are correct (d) Neither (a) nor (b) are correct
D5: What happens to the width of your confidence interval as you increase your sample size? a. Why does this happen? b. Provide a real world example that explains this concept. c. Find an example in your homework this week that illustrates increasing the sample size and how it changes the width of the confidence level. Provide both the question statement and the solution.
19. When calculating a confidence interval, keeping the sample size the same but decreasing the confidence level, will a. decrease the width of the confidence interval b. decrease the margin of error c. make us less sure that our confidence interval contains the true parameter d. all of the above 20. A research company polled a random sample of 799 U.S. teens about internet use.0.49 of those teens reported that they had misrepresented their age online to gain access to...
What will happen to the length of a confidence interval if the sample proportion is increased? a unable to tell b increase the length c decrease the length d stay the same
2. When calculating confidence interval, if you want a wider interval do you: which of the option is correct a) Increase the confidence level. b) Decrease the confidence level . c) Increase the sample size. d) Decrease the sample size.
Consider the usual confidence interval for the mean of a normal population with known variance. What is the relationship between confidence and precision as measured by interval width? A. For a fixed sample size, decreasing the confidence level has no effect on the precision B. For a fixed sample size, decreasing the confidence level decreases the precision C. For a fixed sample size, decreasing the confidence level increases the precision D. None of the above
which of the following will result in a substantially longer confidence interval forμ? A)Increase the number of bootstrap replication to 100000 B) Increase the confidence level C) Increase the amount of computing resources used in bootstrapping D) Include more randomly chosen suburbs into the sample E) Include more suburbs with high crime rates into the sample 17,
which of the following will result in a substantially longer confidence interval forμ? A)Increase the number of bootstrap replication to 100000 B) Increase...
Which of the following would produce a confidence interval with a larger margin of error than the 95% confidence interval with a sample size of 50? A. using a sample size of 100 and fix the confidence level. B. using a confidence level of 90% and fix the sample size. C. using a confidence level of 99% and fix the sample size. D. using a sample size of 500 and fix the confidence level. E. None of the above.
For each of the following three sample sizes, con- struct the 95% confidence interval. Use a sample proportion of 0.40 throughout. What happens to interval width as sample size increases? Why? P. = 0.40 Sample A: N = 100 Sample B: N = 1000 Sample C: N = 10,000
Answer and explain. If all other quantities remain the same, what will happen to the width of a confidence interval if there is an increase in the:confidence level;sample size; andstandard deviation