partially correct(b): Your answer is wrong.There is a popular lottery in which a ticket is called a scratcher. An ad for this lottery claims that the42%of the population all scratching posts are winners. Youwant to investigate this claim by selecting a random sample of48scratching postsFollow these steps to construct a confidence interval for the95%for the population proportion of all winning tickets. Then indicate whether the confidenceinterval you constructed contradicts the ad claim. (If necessary, you can refer to a list of formulas.)(to) Click on "Take sample" to see the results of the random sample.Take a samplewinning scratchingSample size:48postloser scratcherNumber1236Proportion0.250.75Enter the values for the sample size, the point estimate of the population proportion, and the critical value you need to construct the confidenceinterval of the95%. (Choose the correct critical value from the critical value table provided.) When finished, click on "Calculate".Standard orrorX (b)Point estimate:0.25critical value:1.96Calculate0.0000.1280.2500.063Error range:0.1230.373Confidence interval of95%:0.25 +0.123Based on the sample, plot the confidence interval of the95%for the population proportion of all winning scratching posts.• Enter the upper bound and lower bound values on the graph to display your confidence interval.• Under the point (◆), indicate the statement of the ad,0.42.95% Confidence Interval:critical values0.005=2,5760.010 2,32620.025 19600.050 1,6450.100=1,2821.000

The hypothesized proportion of scratchers, that are winners is 42%.The given data…

Answered: There is a popular lottery in which a…

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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Similar questions

A research poll of 1501 adults showed that 1051 of respondents believe in global warming. Find a 98% confidence interval estimate for the proportion of adults that believe in global warming. Based on these results, can we safely conclude that the majority of adults believe in global warming and why?
You want to determine if the proportion of people who will vote for the president next year has increased due to current events. You take a simple random sample of 1100 individuals and find that 897 of them said that they will be voting in the election. Construct a 95% confidence interval, by hand (mean using the equations in the section). Show your work. And then write the conclusion to the confidence interval (follow the examples in the modules) in a complete sentence.
A bank randomly selected 245 checking account customers and found that 115 of them also had savings accounts at this same bank. Construct a 95% confidence interval for the true proportion of checking account customers who also have savings accounts. (Round your answers to three decimal places.) lower limit upper limit
A survey of 80 recent arcanum students showed that 46 were ready for summer break. Find the 95% confidence interval of the true proportion of students ready for summer break.
A university health services physician is concerned about how much sleep freshman are getting. She asked a simple random sample of 100 students if they got at least 8 hours of sleep the previous night. then she constructs a 90% confidence interval for the true proportion of all freshman college students who got at least 8 hours of sleep the previous night. Explain what would happen to the width of the interval if the sample size would decrease to 25 students
In a recent survey of 1092 students, 966 of them would like to recommend www.helpyourmath.com to their friends. Construct a 95% confidence interval estimate the proportion of all students who would recommend to their friends. www.helpyourmath.com Give your answers to three decimals:
A recent survey showed that 42% of US employers were likely to require higher employee contributions for health care coverage. Suppose the survey was based on a sample of 500 companies. Find the 99% confidence interval for the proportion of all companies likely to require higher employee contributions for health care coverage. (Round to four decimal places)
In a preelection poll, a pollster finds that 442 out of 650 people polled favor Smith. Construct the 95% confidence interval for the proportion (nearest to 0.0001) of people in the whole population who favor Smith.
CNN is conducting a poll, and wants to produce a 90% confidence interval for the proportion of all New York residents who favor legalizing recreational marijuana. Of the 602 randomly selected New Yorkers surveyed, 394 were in favor of the initiative. a. With 90% confidence, the proportion of New York residents who favor legalizing recreational marijuana is between BLANK and BLANK. b. Suppose that we survey 602 randomly selected Americans many times, and calculate a confidence interval for each group. About Blank . percent of these confidence intervals will contain the true population proportion of New Yorkers who favor legalizing recreational marijuana, and about BLANK percent will not contain the true population proportion.
In a survey of 508 adults, 317 indicated that emails can be easily misinterpreted. If we wish to construct a 95% confidence interval to estimate the true proportion of adults who believe that emails can be easily misinterpreted we would substitute a. P hat is equal to b. Z is equal to
An online survey of 385 individuals found that 114 had fully completed the game God of War. Which of the following is a 99% confidence interval for the population proportion of individuals who fully completed this video game? (0.2505, 0.3417) (0.2578, 0.3344) (0.2362, 0.3560) None of the above
A team of researchers aims to understand whether a sleep treatment drug has an effect on the number of hours of REM sleep. Five subjects were randomly selected and their time in REM sleep (in minutes) was measured before treatment and after treatment. The before treatment measurements are: (30, 45, 90, 60, 100). The after-treatment measurements for the same five patients are: (35, 30, 80, 70, 110). Your boss looks at the confidence interval you computed and says that it is too wide to be useful for decision making. You propose a list of changes to your methodology that may result in a narrower interval. Which option should NOT be on your list: Group of answer choices increase the confidence level recruit more subjects into the study decrease the confidence level

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