For a given confidence level and w hen σ is known, the margin of error in a confidence interval estimate a. increases as the sample size increases. b. is independent of sample size. c. is the same for all samples of the same size. d. varies from sample to sample of the same size.
For a given confidence level and w hen σ is known, the margin of error in...
1. With same level of confidence, to decrease the margin of error the sample size... a. stays the same b. decreases c. increases 2. With same margin of error, as the level of confidence increases the sample size... a. decreases b. increases c. stays the same
O A. As the sample size decreases, the margin of error decreases ○ B. AS the sample size nonases, the margin of error stays the same. O C. As the sample size inoreases, the margin of error decreases ○ C. As te percent confdence deoreases, the size of the interval increases How does increasing the sample size affect the margin of error, E? O A. O B. As the sample size increases, the margin of error stays the same. As...
QUESTION 3 All things being equal, which is correct? As the confidence level increases, the margin of error gets larger. As the sample size increases, the confidence interval gets wider. As the standard deviation increases, the margin of error gets smaller. As the sample mean increases, the margin of error gets larger. Which of the following is correct? As the sample size increases, the confidence level decreases. As the confidence level increases, the width of the confidence interval decreases. As...
Use the given margin of error, confidence level, and population standard deviation, sigmaσ, to find the minimum sample size required to estimate an unknown population mean, muμ. Margin of error: 1.91.9 inches, confidence level: 9595%, sigmaσequals=2.62.6 inches A confidence level of 9595% requires a mimimum sample size of nothing. (Round up to the nearest integer.)
you are given a margin of error as 3 percentage points and a confidence level of 99%. if the sample percentage from a recent poll is 35% find the minimum sample size to estimate a population proportion. 496 1677 248 2579
Find the margin of error for a 95% confidence interval for estimating the population mean when the sample standard deviation equals 92, with a sample size of (a) 400,(b) 1800. What is the effect of the sample size? 2. The margin of error for a 95% confidence interval with a sample size of 400 is (Round to the nearest tenth as needed.) b. The margin of error for a 90% confidence interval with a sample size of 1600 is (Round...
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...
Question 11 Answer saved Points out of 6.00 For the given margin of error and confidence level, determine the sample size required. A manufacturer of kitchen utensils wishes to estimate the proportion of left handed people in the population. Obtain a sample size that will ensure a margin of error of at most 0.041 for a 97% confidence interval. Show your answer as an integer value! P Pag question Answer:
QUESTION 6 Assume the population standard deviation o is known and the confidence level 1-a is fixed. As the sample size increases, the margin of error a. increases b. decreases OC. stays the same d. None of the other answers are correct
(6) 1.729 (a) 4301 7. How would the margin of error of a confidence interval for a population mean change if you increase the sample size and keep the same level of confidence? The margin of error would (a) stay the same. (c) decrease (b) increase (d) Don't choose this one