Select the scenario which is an example of simple random sampling.AnswerKeypadKeyboard ShortcutsTablesA mobile network operator wants to determine the mean age of its most active subscribers. A random sample of subscribers with the number of text messagesexceeding 30 per day was chosen.City managers want to find out the public's opinion of a newly reconstructed road. They use a local TV station to encourage citizens to make a call to their hot line andshare their experience.Half of the working-age population in the county is under 35 years old, and another half is over 35 years old. The county administration wants to estimate the meanO salary for the two age groups, so they select 500 working-age residents that are younger than 35 and 500 working-age residents that are older than 35 and ask themabout their salary.O Two friends conducted a survey among their schoolmates to find out how much time schoolchildren spend reading books during the summer.

The objective of the question is to identify which of the given scenarios is an example of simple…

Answered: Select the scenario which is an example…

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working
T or F A household is frequently used in analyses because more consistent data are usually collected at that level.
Select the scenario which is an example of voluntary sampling. Answer Keypad Keyboard Shortcuts Tables An airline is interested in getting feedback about their on-board catering experience. They place a questionnaire in the pocket behind each airline seat for passengers to O fill out. An urban planner is interested in determining the traffic volume along a particular road. To estimate the traffic volume, he counts the number of cars that go by during the next 30 minutes. O To determine the mean domestic electricity consumption in the region, the electric company collects data from randomly selected households in the given region. A fitness center has 400 male clients and 300 female clients. They plan to buy new equipment, so they randomly select 80 male clients and 60 female clients and ask them what equipment they use the most.
the unemployment rate for 18- to 34-year-olds was reported to be 10.8% (the Cincinnati Enquirer, november 6, 2012). assume that this report was based on a random sample of four hundred 18- to 34-year-olds. a. a political campaign manager wants to know if the sample results can be used to conclude that the unemployment rate for 18- to 34-years-olds is significantly higher than the unemployment rate for all adults. according to the bureau of labor Statistics, the unemployment rate for all adults was 7.9%. develop a hypothesis test that can be used to see if the conclusion that the unemployment rate is higher for 18- to 34-year-olds can be supported.b. use the sample data collected for the 18- to 34-year-olds to compute the p-value for the hypothesis test in part (a). using a 5 .05, what is your conclusion?c. explain to the campaign manager what can be said about the observed level of significance for the hypothesis testing results using the p-value
With Panel Data, if we assume that the individual effects vi are not correlated with the regressors Xit (i.e. E(vi|Xit) = 0), which one of the following statements is correct: The Fixed Effects estimator is not consistent. Both the OLS and the Random Effects estimators are not consistent. The OLS estimator is not consistent, but the Random Effects estimator is consistent. The OLS and the Random Effects estimator are consistent. All of the above. None of the above
Give an example of a kind of sampling error you might see in a poll besides random sampling error
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QUESTION 2 You work for a big retail chain that operates in a large number of regional markets and you want to investigate the effect of increased marketing spending on sales. You randomly select half of the markets and increase the marketing budget in these markets by 10%. The rest of the markets are allocated the same marketing budget as before. Then comparing the average sales in the markets with increased marketing budget and average sales in the remaining markets will give an unbiased estimate of the true causal effect of increased marketing spending on sales. True O False
In June 2015, Gallup conducted a poll of a random sample of 14802 adults to determine the well-being of people living in the United States. One question asked, "Did you exercise at least 30 minutes for 3 or more days in the past week?" In the survey, 57.3% of males and 42.7% of females responded yes to this question. Which of the following is true about this scenario?A. 57:3% and 42.7% are both statistiesB. 57.3% and 42.7% are both parameter.C. If we took another random sample of 14802 adults, we would expect to get the exact same results.
The management of a large firm would like to know something about employee morale and the other variables to which it may be related. To study these relationships, each employee in a simple random sample of 27 employees is interviewed and tested to obtain information concerning morale level and the average number of satisfying extra work social contacts experienced during a week. Whether or not the duties the employee usually performs are appropriate to the job title is also determined. The dependent variable Y is measure of morale, the quantitative independent variable, X1 is average number of social contacts, and the following dummy variable coding is used to quantify the qualitative variable: X₂ = 1 if yes, X₂ = 0 if no. The model including dummy variable and the interaction term was being estimated and a part of computer outputs is below:
Help please The business manager of a large company wants to check the inventory records against the physical inventories by a sample survey. He wants to be almost sure that the maximum sampling error should not be more than 5% above or below the true proportion of the inaccurate records. The proportion of the inaccurate records is estimated at 35% from past experiences. Determine the sample size?

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