Which is/are true about a 95% confidence interval for a population proportion based on a given sample? I. We are 95% confident that the sample proportion is in our interval. II. There is a 95% chance that our interval contains the population proportion. III. The interval is wider than a 98% confidence interval would be. II and III II only III only I and II none of I, II or III I only

Which is/are true about a 95% confidence interval for a population proportion based on a given sample? I. We are 95% confident that the sample proportion is in our interval. II. There is a 95% chance that our interval contains the population proportion. III. The interval is wider than a 98% confidence interval would be. II and III II only III only I and II none of I, II or III I only

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Construct a 95% confidence interval for p1 - p2 for a survey that finds 30% of 240 males and 41% of 200 females are opposed to the death penalty. Group of answer choices a.(-0.200, -0.021) b.(-1.532, 1.342) c.(-1.324, 1.512) d.(-0.561, 0.651)
Determine the confidence level. Determine the confidence level for confidence interval shown in the figure below. 5-10 =.10 98% 95% 90% 80% arch Cc F2 F3 F4 F5 F6 F7 F8 F9 F10 & 4. 5 * 00 %#3
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.
Words:O QUESTION 3 In a consumer reports article, the magazine reported that 207 of 316 chicken breasts in the United States contained e coli bacteria. a. Find and interpret a 99% confidence interval for the proportion of chicken breasts that contain e. coli (4 points) b. Would you conclude that the proportion of chicken containing e. coli is greater than 50%? Explain your answer (2 points) TTTT Paragraph v Arial 3 (12pt) ,エ、ヨ-三/ o0口% 三三三三三 * HTHL CSS Click Saue and Submit to save and submit. Click Save All Answers to save all answers erch He 9. 3)
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
13 It is estimated that 80% of Americans go out to eat at least once per week, with a margin of error of 0.03 (for 95% confidence). A 95% confidence interval for the population proportion of Americans who go out to eat once per week or more is ______, ______. a 0.77 0.83 b 0.76 0.84 c 0.75 0.85 d 0.74 0.86
Explain what "98% confidence" means in a 98% confidence interval, What does "98% confidence" mean in a 98% confidence interval? O A. If 100 different confidence intervals are constructed, each based on a different sample of sizen from the same population, then we expect 98 of the intervals to include the parameter and 2 to not include the parameter. O B. The probability that the value of the parameter lies between the lower and upper bounds of the interval is 98%. The probability that it does not is 2%. O C. The confidence interval includes 98% of all possible values for the parameter. O D. The value of the parameter lies within 98% of a standard deviation of the estimate. O Time Remaining: 02:19:13 Next MacBook Pro G Search or type URL esc & #3 %24 7 8 4 1 T Y
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You are interested in constructing a 90% confidence interval for the proportion of all caterpillars that eventually become butterflies. Of the 425 randomly selected caterpillars observed, 55 lived to become butterflies. Round answers to 4 decimal places where possible. a. With 90% confidence the proportion of all caterpillars that lived to become a butterfly is between ___and____ . b. If many groups of 425 randomly selected caterpillars were observed, then a different confidence interval would be produced from each group. About ____ percent of these confidence intervals will contain the true population proportion of caterpillars that become butterflies and about _____percent will not contain the true population proportion.