Which of the following statements is true regarding the width of a confidence interval for a population proportion? O a. It is narrower when the sample proportion is 0.20 than when the sample proportion is 0.50. O b. It is wider for 95% confidence than for 99% confidence. O c. It is narrower for 95% confidence than for 90% confidence. d. It is wider for a sample of size 80 than for a sample of size 40.

Which of the following statements is true regarding the width of a confidence interval for a population proportion? O a. It is narrower when the sample proportion is 0.20 than when the sample proportion is 0.50. O b. It is wider for 95% confidence than for 99% confidence. O c. It is narrower for 95% confidence than for 90% confidence. d. It is wider for a sample of size 80 than for a sample of size 40.

Name: Which of the following statements is true regarding the width of a co
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: Which of the following statements is true regarding the width of a confidence interval for a population proportion?O a.It is narrower when the sample proportion is 0.20 than when the sample proportion is 0.50.O b. It is wider for 95% confidence than

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

0 9 10 10 10 4 12 7 11 5 0 8 3 a. To compute the confidence interval use a ? t z distribution. b. With 90% confidence the population meannumber of days of class that college students miss is between and days. c. If many groups of 13 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of missed class days and about percent will not contain the true population mean number of missed class days.
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
True or false? If the original x distribution has a relatively small standard deviation, the confidence interval for ? will be relatively short. a. False. As ? decreases, E decreases, resulting in a longer confidence interval. b. True. As ? decreases, E increases, resulting in a shorter confidence interval. c. True. As ? decreases, E decreases, resulting in a shorter confidence interval. e. False. As ? decreases, E increases, resulting in a longer confidence interval.
You create a 95% confidence interval for the proportion of a population. The confidence interval does not contain 0.10. This means that Group of answer choices a.You have evidence to conclude that the population proportion is equal to 0.10. b.You do not have evidence to conclude that the population proportion is equal to 0.10. c.You have evidence to conclude that the population proportion is not equal to 0.10. d.You do not have evidence to conclude that the population proportion is not equal to 0.10. e.The answer cannot be determined with the information given.
Which interval is which? Alessandro constructed three confidence intervals, all from the same random sample. The confidence levels are 90%, 95%. and 99%. The confidence intervals are I. 4.5<µ<5.5 II. 4.3 <µ<5.7 III. 4.6<µ<5.4 Unfortunately, Alessandro has forgotten which confidence interval has which level. Match each confidence interval with its level. 4.5
Ch. 6.1 CI We examine the effect of different inputs on determining the sample size needed to obtain a specific margin of error when finding a confidence interval for a proportion. Find the sample size needed to give, with 95% confidence, a margin of error with +/- 6% when estimating a proportion. Within +/- 4%. Within +/- 1%. (Assume no prior knowledge about the population proportion p). Comment on the relationship between the sample size and the desired margin of error.
Which interval is which? Alessandro constructed three confidence intervals, all from the same random sample. The confidence levels are 90%, 95%, and 99%. The confidence intervals are I. 7.4<μ<8.6 II. 7.1
Please answer all. Thank you. The width of a confidence interval for a proportion will be A.) wider for sample of size 100 than for a sample size of 50 B.) wider when the sample proportion is 0.50 than when the sample proportion is 0.20 C.) wider for 90 percent confidence than for 95 percent D.) narrower for 99 percent confidence than for 95 percent Which of the following is not a property of a normally distributed data. A.) the mean, median and mode coincide at the center B.) area under curve is 1 C.) the width of curve is determined by the mean of distribution. D.) the curve is symmetrical about its center.
#34
Can you help me with this question?
Provide an appropriate response. Suppose you have obtained a confidence interval for u, but wish to obtain a greater degree of precision. Which of the following would result in a narrower confidence interval? L Increasing the sample size while keeping the confidence level fixed II. Decreasing the sample size while keeping the confidence level fixed III. Increasing the confidence level while keeping the sample size fixed IV. Decreasing the confidence level while keeping the sample size fixed O A. , IV O B. I, II OC. II, IV O D. II, II O E. II, IV