os/assessment/take/launch.jsp?course_assessment_id%3D_442215_18course_id%3D_3645813_1&content_id=D 8105255uestion Completion Status:QUESTION 47A researcher randomly selected 70 of the nation's middle schools and interviewed all of the teachers at eachschool. Identify the sampling techniqueO Cluster samplingO Stratified samplingO Convenience samplingO Simple random samplingQUESTION 48A researcher randomly selects 400 research participants under 45 years of age and 100 research participants overyears of age. Ident fy the sampling technicue.

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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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cation.wiley.com/was/ui/v2/assessment-player/index.html?launchld%3D23444A65-4cc0-4df8-ble1-88275c2bf7cd#/guestion/2 rk updated Question 3 of 9 -/1 三 View Policies Current Attempt in Progress Who Is More Trusting: Internet Users or Non-users? In a randomly selected sample of 2237 US adults, 1754 identified themselves as people who use the Internet regularly while the other 483 indicated that they do not use the Internet regularly. In addition to Internet use, participants were asked if they agree with the statement "most people can be trusted." The results show that 807 of the Internet users agree with this statement, while 130 of the non-users agree." Find a 99% confidence interval for the difference in the two proportions, p, - PN,where p, is the proportion for the internet users who agree with the statement and py is the proportion for the non-internet users who agree with the statement. Round youranswers to three decimal places. The 99% confidence interval is to Hampton, K., Goulet,…
Assume that you are preparing to confirm accounts receivable at December 31, 2025, which is one month prior to the fiscal year- end of January 31, 2026. The book value of gross accounts receivable is $71,622,804. Complete the following requirements related to the confirmation of receivables for Cloud 9 based on previous work and the following information. Using PPS sampling, determine the sample size that you want to use for sending accounts receivable confirmations. The book value of accounts receivable before the allowance for doubtful accounts is $71,622,804. You make the following assumptions. (a) You set tolerable misstatement for accounts receivable at $3,500,000. Expected misstatement = $750,000. Risk of incorrect acceptance = 37%. * Your answer is incorrect. Using PPS sampling, determine the sample size that you want to use for sending accounts receivable confirmations. The book value of accounts receivable before the allowance for doubtful accounts is $71,622,804. You make the…
Customers at IT Phone Call Center have been complaining that they are waiting too long for service. The managers at the call center have taken notice and asked you to do some investigating to determine the typical service time for their customers for morning shifts compared to evening shifts. You collect the following samples (time in minutes): Morning shifts: 8, 15, 16, 18, 18, 20, 21, 21, 21, 56 Evening shifts: 3, 11, 12, 14, 22, 22, 30, 33, 34, 47 Explain in detail which descriptive statistic (mean, median, or mode) you would utilize to communicate the typical service time to your boss for each shift and why. In your explanation, be sure to include which shift (morning or evening) has the quicker turn-around time.
What does weight the poll mean and by weighting the poll what sample methods are effectively being used?
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An online store chooses an SRS of 101 customers from its list of all people who have bought something from the store in the last year. It asks those selected how satisfied they are with the store’s website. If it selected two SRSs of 100 customers at the same time, the two samples would give somewhat different results. Is this variation a source of sampling error or of nonsampling error? Explain why. Would the survey’s announced margin of error take this source of error into account.
A shareholders' group is lodging a protest against your company. The shareholders group claimed that the mean tenure for a chief exective office (CEO) was at least 9 years. A survey of 98 companies reported in The Wall Street Journal found a sample mean tenure of 8.7 years for CEOS with a standard deviation of s = 4.7 years (The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume it is normally distributed. You want to formulate and test a hypothesis that can be used to challenge the validity of the claim made by the group, at a significance level of a hypotheses are: 0.001. Your H.:µ > 9 Ha:µ < 9 а
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The National Bank of Zachary has opened up two new drive-through teller windows outside its main office building in downtown Zachary. The bank is not sure that it needs both windows open all days so it has decided to conduct a work sampling study to 11:30 am and 1:00 pm to 3:00 pm. The work sampling study was conducted at random over a 5-day period and the following observations were recorded. Bank management wants the study to be 5 percent accurate with a 95 percent confidence level. How many additional sample observations should be taken? Step by step solution

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