Qnt 561 final exam

Qnt 561 final exam

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  Get complete A+tutorial here https://bitly.com/10tANCR In this paperwork of QNT 561 Final Exam you will find the answers on the next questions: 1. A difference between calculating the sample mean and the population mean is 2. Which of the following measures of central location is affected most by extreme values? 3. Which level of measurement is required for the median? 4. In which of the following distributions is the probability of a success usually small? 5. Which of the following is not a requirement of a probability distribution? 6. Which of the following is not a requirement of a binomial distribution? 7. A sample 8. The difference between the sample mean and the population mean is called the 9. Suppose a population consisted of 20 items. How many different sample of n = 3 are possible? 10. A point estimate is 11. We wish to develop a confidence interval for the population mean. The population follows the normal distribution, the standard deviation of the population is 3, and we have a sample of 10 observations. We decide to use the 90 percent level of confidence. The appropriate value of to represent the level of confidence is 12. A confidence interval
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  13. The SpecialRule of Addition is used to combine 14. We use the General Rule of Multiplication to combine 15. An experiment is a 16. Which of the following statements is true regarding a sample? 17. Which of the following statements is true regarding a population? 18. A nominal scale variable is 19. In a two-sample test of means for independent samples, the equal sign always appears in 20. The alternate hypothesis 21. Which of the following is a requirement for a two-sample test of proportions? 22. In a contingency table 23. To conduct a nonparametric test the 24. In a goodness-of-fit test where the sample size is 200, there are 5 categories, and the significance level is .05. The critical value of X2 is 25. A dummy variable or indicator variable 26. The multiple standard error of estimate is 27. A correlation matrix 28) The difference between a random variable and a probability distribution is: 29) The mean and the variance are equal in 30) Events are independent if 31) Which of the following is a correct statement about a probability? 32) The ratio scale of measurement 33) In a two-sample test of means for independent samples, we use the z distribution when 34) Which of the following is not a characteristic of the X2
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  35) In amultiple regression equation General Questions - General Academic Questions QNT/561 Final Exam 1) Which of the following measures of central location is affected most by extreme values? A. Mean B. Median C. Mode D. Geometric mean 2) Which level of measurement is required for the median? A. Nominal B. Ordinal C. Interval D. Ratio 3) Which level of measurement is required for the mode? A. Nominal B. Ordinal C. Interval D. Ratio 4) In a set of observations, which measure of central tendency reports the value that occurs most often? A. Mean B. Median C. Mode D. Geometric mean 5) The weighted mean is a special case of what? A. Mean B. Median C. Mode D. Geometric mean
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  6) A sampleof 5 companies were examined for changes in their relative market share. The results showed the following increases and decreases: –5, 10, 10, 5, –10. A. 8 B. 2 C. -2 D. 6 7) The difference between the sample mean and the population mean is called the A. margin of error B. population standard deviation C. standard error of the mean D. sampling error 8) A local trade union consists of plumbers and electricians. Classified according to rank: Apprentice Journeyman Master Total Plumbers 25 20 30 75 Electricians 15 40 20 75 40 60 50 A member of the union is selected at random. Given that the person selected is an electrician, what is the probability that the person is a master? A. .053 B. .133 C. .500 D. .267 9) Suppose a population consisted of 20 items. How many different samples of are possible? A. 6840 B. 1140 C. 20
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  D. 120 10)The mean and the variance are equal in A. the normal distribution B. the binomial distribution C. the Poisson distribution D. the hypergeometric distribution 11) In the 1936 Presidential Election Franklin D. Roosevelt defeated Alfred E. Landon in a landslide vote. A Landon victory had been predicted by the Literary Digest, a magazine that ran the oldest, largest, and most widely publicized of the polls at the time. The Digest's final prediction was based on 10 million sample ballots mailed to prospective voters, and 2.3 million were returned. The sample of voters was drawn from lists of automobile and telephone owners. Despite the massive size of this sample, it failed to predict a Roosevelt victory, being off the mark by 19 percentage points. The Digest was wrong because A. the sample size, although large, was not large enough B. the right research questions were not asked C. respondents intentionally lied about their preferred candidate D. the sample used was not representative of the actual population at the time 12) In a study on the effect of reinforcement on learning from a company online training program, two experimental treatments are planned: reinforcement given after every learning module, or reinforcement given after every two learning modules. Reinforcement is accomplished with the addition of more examples. Which one of the following control groups would serve best in this study? A. A group that does not read any of the learning modules.
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  B. A groupthat reads the modules using hardcopy only. C. A group that reads the learning modules, but does not receive reinforcement. D. A group that reads the learning modules with random reinforcement. 13) The central limit theorem is important to market researchers because it states that as sample sizes increase, the distribution of the sample ________ collected from consumers on any topic of interest being researched approaches the normal distribution. A. medians B. means C. standard deviations D. variances 14) To find confidence intervals for the mean of a normal distribution, the t distribution is usually used in practical applications instead of the standard normal distribution because A. the mean of the population is not known B. the t distribution is more effective C. the variance of the population is usually not known D. the sample size is not known 15) We wish to develop a confidence interval for the population mean. The population follows the normal distribution, the standard deviation of the population is 3, and we have a sample of 10 observations. We decide to use the 90% level of confidence. The appropriate value of to represent the level of confidence is A. B. C.
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  D. 16) Whichof the following is a correct statement about a probability? A. It may range from 0 to 1. B. It may assume negative values. C. It may be greater than 1. D. It cannot be reported to more than 1 decimal pl... https://bitly.com/10tANCR