36 multiple choice quiz with quick turn around time… – Assignment Help Online Collections

36 multiple choice quiz with quick turn around time… – Assignment Help Online Collections

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Identify each of the following as examples of nominal, ordinal, interval, or ratio scales of measurement. (4 points each)A poll of registered voters in Florida asking which candidate they supportThe length of time required for a wound to heal when using a new medicineThe number of telephone calls arriving at a switchboard per five-minute periodThe distance first-year college football players can kick a ballMental health diagnoses present in an elderly populationThe rankings of employees on their job performance(Points : 24)Question 2. 2.Two hundred raffle tickets are sold. Your friend has five people in her family who each bought two raffle tickets. What is the probability that someone from her family will win the raffle?(Points : 4)Question 3. 3. Jolie has 45 minutes to do her statistics homework. If the mean is 38 minutes and the standard deviation is 3, calculate Jolie’s z score. Once calculated, interpret your findings in terms of Jolie’s performance.(HINT: use the normal distribution and the probability that other students performed better or worse.) (Points : 8)Question 4. 4. A psychologist measures units of change for a memory test after students are given an opportunity to sleep only four hours. The following change units were obtained: 7, -12, 4, -7, 3, -10. Find the a) mean, b) median, c) mode, d) standard deviation, e) range, and f) variance. (Points : 24)Question 5. 5. A student scored 81 on a chemistry test and 75 on a history test. For the chemistry test, the mean was 70 and the standard deviation was 20. For the history test, the mean was 65 and the standard deviation was 8. Did the student do better on the chemistry test or the history test? Explain your answer. (Points : 12)Question 6. 6. Suppose you want to figure out what to do with your degree in psychology. You ask some fellow students from your psychology program who recently graduated to find out what they are doing with their degree and how much it pays. What type of sampling is this? What are the limitations of this sampling approach? (Points : 8)Question 7. 7. Variables in which the values are categories are known as (Points : 4)Interval variablesNominal variablesOrdinal variablesRatio variablesQuestion 8. 8. Before the researcher can conduct a statistical test, the research question must be translated into (Points : 4)A testable hypothesisAdditional observationsMathematical symbolsNumbersQuestion 9. 9. The hypothesis stating that there are no differences, effects, or relationships is (Points : 4)The alternative hypothesisThe baseline hypothesisThe null hypothesisThe reasonable hypothesisQuestion 10. 10. A group of students made the following scores on a 10-item quiz in psychological statistics: {5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10} What is the mean score? (Points : 4)6.67.27.88.7Question 11. 11. A group of students made the following scores on a 10-item quiz in psychological statistics: {5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10} What is the median score? (Points : 4)6789Question 12. 12. A group of students made the following scores on a 10-item quiz in psychological statistics: {5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10} What is the mode? (Points : 4)5789Question 13. 13. A group of students made the following scores on a 10-item quiz in psychological statistics: {5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10} What is the range of scores? (Points : 4)56711Question 14. 14. A group of students made the following scores on a 10-item quiz in psychological statistics: {5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10} What is the variance, treating these scores as a sample? (Points : 4)1.531.602.332.56Question 15. 15. The standard normal distribution has all the following properties EXCEPT: (Points : 4)The mean, mode, and median are all equalThe total area under the curve equals 1The curve is specified by two parameters, the mean and the standard deviationThe curve extends to + and – 3 standard deviations from the meanQuestion 16. 16. According to the Empirical Rule, approximately _______% of the data in a normal distribution will fall within ±1 standard deviation of the mean. (Points : 4)34689599.7Question 17. 17. In statistical computations, the number of values that are free to vary is known as (Points : 4)Degrees of freedomFreedom factorVariability indexVariation quotientQuestion 18. 18. Which of the following reflects a Type I error? (Points : 4)Rejecting the null hypothesis when in reality the null hypothesis is trueRejecting the null hypothesis when in reality the null hypothesis is falseAccepting the null hypothesis when in reality the null hypothesis is trueAccepting the null hypothesis when in reality the null hypothesis is falseQuestion 19. 19. Which type of sampling is used when the experimenter asks 5 area doctors to refer pregnant women to his study and accepts all women who offer to be in his study? (Points : 4)purposive samplingconvenience samplingcluster samplingstratified samplingQuestion 20. 20. In our statistics equations, n refers to: (Points : 4)meanstandard deviationnormal distributionnumber of subjectsQuestion 21. 21. Which of the following is true regarding alpha? (Points : 4)it is also known as the level of significancevalue is set by the researchervalue is equal to the probability of a type I errorall of the above are trueQuestion 22. 22. Macy proposes that boys who play sports are viewed as more attractive than boys who do not play sports. What is her null hypothesis? (Points : 4)Boys who play sports are not viewed as more attractive than boys who do not play sportsPlaying sports will influence how attractively boys are viewedBoys who play sports are more attractive than girls who play sportsThere can be no null hypothesisQuestion 23. 23. You calculate a t of 2.38 and note that the tabled value for .01 is 3.22 and for .05 is 2.19. You would conclude that the null hypothesis can be: (Points : 4)Accepted at the .05 levelRejected at the .01 levelRejected at the .05 levelNone of the aboveQuestion 24. 24. A researcher is studying political conservatism among 11 engineering students and 11 humanities students. The number of degrees of freedom for a t test is: (Points : 4)22201110Question 25. 25. A t test for dependent groups should be used instead of a t test for independent samples: (Points : 4)If each participant is measured twiceWhenever there are equal numbers of subjects in each groupWhenever there are only two groupsAll of the aboveQuestion 26. 26. In a normal distribution, what percent of the population falls within one and two standard deviations of the mean? (Points : 4)34%68%95%cannot tell from the information givenQuestion 27. 27. Which of the following is more affected by extreme scores? (Points : 4)ModeMeanMedianNone of the above are affectedQuestion 28. 28. On a histogram, what does the vertical (y) axis refer to? (Points : 4)Individual scoresFrequenciesMeansDeviation scoresQuestion 29. 29. Which statistic refers to the average amount by which the scores in the sample deviate from the mean? (Points : 4)RangeStandard deviationMedianModeQuestion 30. 30. Assume a normal distribution for N = 300. How many cases would one expect to find between +1 and -1 standard deviations around the mean? (Points : 4)102285150204Question 31. 31. A z score of zero tells us that the score is at the________of the distribution. (Points : 4)MeanVery topVery bottomNone of the above since z cannot be zeroQuestion 32. 32. In a unit normal curve, what goes on the x axis? (Points : 4)FrequenciesObserved scoresz scoresAreaQuestion 33. 33. Which of the following is a measure of variability? (Points : 4)MeanRangeIntervalAll of the aboveQuestion 34. 34. The only measure of central tendency that can be found for nominal data is the (Points : 4)MeanMedianModeMidrangeQuestion 35. 35. If the probability of event A is 0.45 and the probability of event B is 0.35 and the probability of A and B occurring together is 0.25, then the probability of A OR B is: (Points : 4)0.81.80.15750.55Question 36. 36. A researcher knows that the average distance commuting students live from campus was previously 8.2 miles. Because of the rising prices of gasoline, the research wants to test the claim that commuting students now live closer to campus. What is the correct alternative hypothesis? (Points : 4)The new mean distance is 8.2 miles.The new mean distance is less than or equal to 8.2 miles.The new mean distance is less than 8.2 miles.The new mean distance is greater than or equal to 8.2 miles.

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