A newspaper conducted a statewide survey concerning the 2008 race for state senator. Thenewspaper took an SRS of 1200 registered voters and found that 620 would vote for theRepublican candidate. Let p represent the proportion of registered voters in the state thatwould vote for the Republican candidate.What condition is NOT required to be met in order to construct a confidence interval for p?aRandomO b10n SNnp 2 10 and n(1-p) 2 10O dn2 30 or stated as normal

What condition is not required to be met in order to construct a confidence interval for p ?

Answered: A newspaper conducted a statewide…

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

A yogurt company claims that it prints a free yogurt coupon under a randomly selected 20% of its lids. A loyal customer purchases 85 yogurt cups, and records whether each was a winner. After consuming all 85 cups, he is disappointed to see that only 12 (14.1%) of his yogurt cups contained coupon codes. He performs a 99% confidence interval for the proportion of yogurt cups containing coupon codes, obtaining (0.044, 0.238). What conclusion can the customer draw about the yogurt company’s claim? The company’s claim may be justified because 0.2 is in the confidence interval. The company’s claim is definitely justified because 0.2 is in the confidence interval. The company’s claim is not justified because the upper endpoint of the confidence interval is 0.238. The company’s claim is not justified because 12 out of 85 (0.141) is far less than 0.2.
During the referandum of 1986, candidate B12 showed the following pre-election voter support in Colorado and Alaska. Voters Surveyed Voters who FavoredCandidate B12 Colarado 550 290 Alaska 750 360 a). Develop a 95% confidence interval estimate for the difference between the proportion of voters who favored candidate B12 in the two polling states.
The results of a recent poll on the preference of voters regarding the presidential candidates are shown below.Voters SurveyedVoters FavoringThis CandidateCandidate A 200 150Candidate B 300 195a) Develop a 90% confidence interval estimate for the difference between the proportions of voters favoring each candidate.b) Compute the test statisticc) Determine the p-value and test the above hypotheses.
A sample of voters were polled to determine the likelyhood of measure 324 passing. The poll determined that 74 % of voters were in favor of the measure with a margin of error of 2.8 %. Find the confidence interval.
A poll for the presidential campaign sampled 491 potential voters in June. A primarypurpose of the poll was to obtain an estimate of the proportion of potential voters whofavored each candidate. Assume a planning value of p* = .50 and a 95% confidencelevel.a. For p* = .50, what was the planned margin of error for the June poll?
A New York Times/CBS News Poll asked a random sample of U.S. adults the question “Do you favor an amendment to the Constitution that would permit organized prayer in public schools?” Based on this poll, the 95% confidence interval for the population proportion who favor such an amendment is (0.63, 0.69). Based on this poll, a reporter claims that more than two-thirds of U.S. adults favor such an amendment. Use the confidence interval to evaluate the reporter’s claim. Because the value 23=0.66723=0.667 (and values greater than 2323) are in this interval, it is plausible that more than 2323 of the population favor such an amendment. Thus, there is convincing evidence that more than 2323 of U.S. adults favor such an amendment. Because 23=0.66723=0.667 is included in this interval, it is plausible that more than 2323 of U.S. adults favor such an amendment. 95% of the time there will be more than two-thirds of U.S. adults in favor of such an amendment. Because 0.95 > 0.667, the…
A department store finds that in a random sample of 200 customers, 60% of the sampled customers had browsed its website prior to visiting the store. Based on this data, a 90% confidence interval for the population proportion of customers that browse the store’s website prior to visiting the store will be between _________________. 0.6588 and 0.6312 0.4528 and 0.5250 0.5960 and 6040 0.5978 and 0.6022 0.5430 and 0.6570
Near the time of an election, a cable news service performs an opinion poll of 1,000 probable voters. It shows that the Republican contender has an advantage of 54% to 48%. a. Develop a 95% confidence interval for the proportion favoring the Republican candidate. b. Estimate the probability that the Democratic candidate is actually leading. c. Repeat the above analysis based on a sample of 2,000 probable voters.
In a study of police gunfire reports during a recent year, it was found that among 540 shots fired by New York City police, 210 hit their targets; among 283 shots fired by Los Angeles police, 77 hit their targets. We want to use a 0.05 significance level to test the claim that New York police have a higher hit rate than the Los Angeles police. Let New York police be represented by p1. Construct a 95% confidence interval and then choose all that apply to this problem. A. Since zero is contained in the confidence interval there appears to be no differnece in the proportions B. New York police have a higer hit proportion than Los Angelos police C. Confidence interval: (-0.0004, 0.1303) D. We fail to reject the null hypothesis E. We should reject the null hypothesis F. Confidence Interval: (0.0396, 0.1729)
Suppose a retailer claims that the average wait time for a customer on its support line is 185 seconds. A random sample of 53 customers had an average wait time of 177 seconds. Assume the population standard deviation for wait time is 53 seconds. Using a 95% confidence interval, does this sample support the retailers claim? A) Yes, because the retailers claim is beteeen the lower limit of __ seconds and the upper limit of __ seconds for the mean wait time. B) No, because the retailers claim is not between the lower limit of __ seconds and the upper limit of __ seconds for the mean wait time. Please help!
A random sample of 4000 U.S. citizens yielded 2250 who are in favor of gun control legislation. Estimate the true proportion of all Americans who are in favor of gun control legislation using a 90% confidence interval.A) .4375 ± .4048 B) .4375 ± .0129 C) .5625 ± .0129 D) .5625 ± .4048
A corporation employs 148 sales representatives. A random sample of 60 of them was taken, and it was found that, for 36 of the sample members, the volume of orders taken this month was higher than for the same month last year. Find a 95% confidence interval for the population proportion of sales representatives with a higher volume of orders.

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS