Answered: Will Proposition 100 Pass? (b) Based on…

Will Proposition 100 Pass? (b) Based on the interval, is there convincing evidence that a majority of registered voters in the city plan to vote for Proposition 100?

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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Suppose you calculate a 95% and 90% confidence interval for the true proportion of college students with student loan using the same data set. Which of the following must be true? a) The 95% confidence interval is wider than the 90% confidence interval. b) The 95% confidence interval is the same length as the 90% confidence interval. c) The 95% confidence interval is narrower than the 90% confidence interval. d) There is no way to tell from the given information.
If the confidence interval for the difference between two treatment means contains , then we cannot reject the null hypothesis that the two treatment means are equal.
Which of the following statement(s) about confidence intervals are correct? 1) There is no relationship between sample size and confidence interval's width 2) the smaller the sample size, the wider the confidence interval. 3) The higher the confidence level, The narrower the confidence interval. 4) The higher the confidence level, The wider the confidence interval. 5) The larger the sample size, The wider the confidence interval. 6) There is no relationship between confidence level and confidence interval's width.
The full question for part B is written down below. (b) The 90% confidence interval is (__,__). It does/does not seem likely that the population mean could be within 8% of the sample mean because 8% off from the sample mean would fall outside/inside the confidence interval. It does not/does seem likely that the population mean could be within 9% of the sample mean because 9% off from the sample mean would fall outside/inside the confidence interval.
A survey conducted on a certain website indicated that 44.7% of the people visiting this website consider the color red rather irritating and want the website to use it as little as possible. The survey had a margin of error of 4.8% with a 95% confidence level. What does this margin of error tell you about the percentage of people visiting this website who do not like the color red? We can be 95% confident that somewhere between ? % and ? % of the visitors of this website do not like the color red.
Which of the following is the BEST interpretation of the 97% one-sample confidence interval? If we consider all possible 97% one-sample confidence intervals arising from all possible samples of places in Florida, then 97% of those intervals should contain the average rainfall amount for all places in Florida. If we consider all possible 97% one-sample confidence intervals arising from all possible samples of size 12, then all of those intervals should contain the average rainfall amount for all places in Florida. If we consider all possible 97% one-sample confidence intervals arising from all possible samples of size 12, then 97% of those intervals should contain the average rainfall amount for all places in Florida. If we consider all possible places in Florida, then 97% of those places should have the average rainfall amount for Florida. If we consider all possible one-sample confidence intervals arising from all possible…
Suppose we want to estimate the proportion of college students who use stimulants to help them study. If we want to estimate this proportion to within 5% at the 95% confidence level, how many randomly selected college students must we survey?If we want to estimate this proportion to within 5% at the 90% confidence level, do we need to survey more students or can we survey fewer students (compared to your previous answer)? We need to survey more students or We can survey fewer students If we want to estimate this proportion to within 4% at the 95% confidence level, do we need to survey more students or can we survey fewer students (compared to your first answer)? We need to survey more students or We can survey fewer students
Two researchers, Jaime and Mariya, are each constructing confidence intervals for the proportion of a population who is lef-handed. They find the point estimate is 0.23. Each independently constructed a confidence interval based on the point estimate, but Jaime's interval has a lower bound of 0.220 and an upper bound of 0.234, while Mariya's interval has a lower bound of 0.169 and an upper bound of 0.272. Which interval is wrong? Why? 28 Choose the correct answer below. OA Jaime's interval is wrong because it does not include the point estimate. OB. Mariya's interval is wrong because it is too wide. OC. Mariya's interval is wrong because it is not centered on the point estimate, OD. Jaime's interval is wrong because it is to narrow O of 36
A 95% confidence interval for the proportion of students achieving a reading achievement score that is above the standard set by the teachers for a population of third grade students is (0.43, 0.49). Which is the correct interpretation of the confidence interval? a)95% of the third grade students scores between 43% and 49% of the reading achievement score. b)We are 95% confident that 43% to 49% of elementary school students achieves reading achievement score above the standard. c)We are 95% confident the true proportion of third grade students achieves reading achievement score above the standard is between 43% to 49% d)We are 95% confident that 43% to 49% of the sample of third graders achieves reading achievement score above the standard.
56 2.) What does the confidence interval suggest about farmer Joe's claim that type 1 seed is better than type 2 seed? A. Because the confidence interval only includes positive values and does not includes positive values and does not include zero, there is sufficient evidence to support farmer Joe's claim. B. Because the confidence interval includes zero, there is sufficient evidence to support farmer Joe's claim. C. Because the confidence interval only includes positive values and does not include positive values and does not include zero, there is not sufficient evidence to support farmer Joe's claim. D. Because the confidence interval includes zero, there is not sufficient evidence to support farmer Joe's claim.
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