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VCU STAT 210 - Test 1 Practice Test #1

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Test 1 Practice Test #1Robert Francis "Bob" McDonnell (born June 15, 1954) is a Republican politician and was the 71st Governor ofVirginia. McDonnell served on the executive committee of the Republican Governors Association, wasa lieutenant colonel in the United States Army, served in the Virginia House of Delegates from 1992 to 2006, andwas Attorney General of Virginia from 2006 to 2009. McDonnell was elected Governor of Virginia after using thecampaign slogan "Bob's for Jobs." He defeated Democratic state Senator Creigh Deeds by a 17-point margin inthe 2009 general election, which was marked by the severe recession of the late 2000s. The state's unemploymentrate declined from 7.4% in January 2010, when McDonnell took office, to 5.2% in December 2013, comparableto the decline in the national unemployment rate from 9.8% to 6.7% during the same period. McDonnell'sgovernorship ended with a 55% to 32% approval to disapproval rating among registered voters. On January 21,2014, McDonnell and his wife, Maureen, were indicted on federal corruption charges. – edited from Wikipedia1. During July and August of 2014 Bob and Maureen McDonnell have been on trial defending themselves of federalcorruption charges. Of interest is to determine the proportion of all current eligible voters in the Commonwealth ofVirginia who feel Bob and Maureen McDonnell are guilty of the charges made against them. Based on thisinformation, what is the population of interest?2. Based on the information in question 1, what is the parameter of interest? _____ 3. A sample of 798 current eligible voters in the Commonwealth of Virginia was selected, and each voter wasasked whether they were aware of the trial involving Bob and Maureen McDonnell. In this sample 686voters, or approximately 86%, indicated that they were aware of the trial. In this scenario, is 86% anexample of a parameter or a statistic?(A) Parameter (B) Statistic_____ 4. To select the sample described in question 3 the following was done. The Commonwealth of Virginia isdivided into 95 counties and 38 independent cities. For each of these 133 counties and cities, six currenteligible voters were randomly selected and asked whether they were aware of the trial involving Bob andMaureen McDonnell. Each responded either Yes or No. What type of sampling procedure is this anexample of?(A) Volunteer response sampling (B) Simple random sampling (C) Haphazard sampling(D) Multistage random sampling (E) Stratified random sampling _____ 5. Consider the information in question 3 and the sampling procedure described in question 4. Suppose thatout of the 798 current eligible voters in the Commonwealth of Virginia selected for the sample, 56 votersliving in southwest Virginia either could not be contacted or refused to answer. What type of bias couldthis cause?(A) Selection bias (B) Response bias (C) Nonresponse bias (D) Confounding bias_____ 6. The statement from Wikipedia mentions that the unemployment rate in the Commonwealth of Virginiadeclined from 7.4% in January 2010, when McDonnell took office, to 5.2% in December 2013,comparable to the decline in the national unemployment rate from 9.8% to 6.7% during the same period.For a given period of time, the unemployment rate for each of the 50 states is what type ofcharacteristic?(A) Categorical variable (B) Discrete quantitative variable (C) Continuous quantitative variable (D) Constant_____ 7. Bob McDonnell was a Republican when elected to office. Suppose that the 798 current eligible voters inthe Commonwealth of Virginia who make up the sample were asked their political affiliation. The possibleresponses were Republican, Democrat, Independent, and other or no preference. In this scenario, thepolitical party affiliation of each eligible voter is what type of characteristic?(A) Categorical variable (B) Discrete quantitative variable (C) Continuous quantitative variable (D) Constant8. The prosecution has a list of 61 witnesses that it plans to call in the corruption trial of Bob and MaureenMcDonnell. Of interest is to determine the mean amount of time that each witness spent on the witness stand . Inthis scenario, what is the population of interest?9. Based on the information in question 8, what is the parameter of interest?_____ 10. Consider the information presented in question 8. What type of characteristic is mean amount of timethat each witness spent on the witness stand?(A) Categorical variable (B) Discrete quantitative variable (C) Continuous quantitative variable (D) Constant_____ 11. Each day of the trial the number of witnesses that testified that day was recorded. What type ofcharacteristic is the number of witnesses that testified each day?(A) Categorical variable (B) Discrete quantitative variable (C) Continuous quantitative variable (D) Constant_____ 12. Of interest is to select a sample of 12 of the 61 prosecution witnesses. Which of the following is the bestway to select the sample of 12 witnesses?(A) Label all witnesses using two digit numbers from 01 to 61, and then use a table of random digits toselect 12 two digit numbers between 01 and 61. Match the numbers selected to the appropriatewitnesses and these become the 12 witnesses in the sample.(B) On August 13 director Stephen Spielberg was mentioned during testimony at the trial. Give tickets tothe next Spielberg movie to the first 12 witnesses who volunteer.(C) Label all witnesses with two digit numbers from 01 to 12, and then use a table of random digits toselect 12 two digit numbers between 01 and 12.(D) It has been determined that 12 witnesses have spent at least one night at the Jefferson Hotel. Choosethese 12 witnesses to become the sample._____ 13. A study of the witness list reveals that 6 of the 61 prosecution witnesses are immediate family of formerGovernor Bob McDonnell. In this scenario, is 6 an example of a parameter or a statistic?(A) Parameter (B) Statistic_____ 14. Suppose a sample of 30 witnesses was selected, and each was asked whether they had ever spent a night atthe Governor’s mansion. Due to the seriousness of the charges and the potential negativity associated withadmitting that they had stayed at the


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VCU STAT 210 - Test 1 Practice Test #1

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