the exam. B Question 13 1 pts If an entire population with u = 60 and o - 8 is transformed into z-scores, then the distribution of z-scores will have a mean of __ and a standard deviation of 60 and 8 (unchanged) O O and 1 0 and 8 60 and 1Question 19 1 pts Of 50 women treated for breast cancer in the local cancer unit, 35 of them survived for at least 5 years. For a woman who has just been diagnosed with breast cancer, our best guess is that the probability that she will survive for 5 years is 35/50 = .70 15/35- .43 we don't have enough information 35/100 = 35exam. Be sure D Question 12 1 pts If an instructor divides everyone's score by two, how will the standard deviation change? O the new standard deviation will be twice as large as the old standard deviation Odecrease by 6/3 or, become 2 the new standard deviation and the old standard deviation will be the same the new standard deviation will be half as large as the old standard deviationon the exam. Be Question 17 1 pts One researcher measures depression on a scale from 0-10, with a mean of u = 5. Another researcher measures depression on a scale from 10-100 with a u - 50. If we transform both scales to a z-distribution, what value will the mean (u) have? O 50 cannot be determined from the information given 05Question 10 1 pts Which of the following is NOT a measure of variability? O the standard deviation O the range the density the interquartile rangeMy Lifey are on the exam, Be sure question. Question 9 1 pts The inter-quartile range is a useful measure of variability. O when the distribution is normal O d. when you have z-scores O c. when the data is on a nominal scale of measurement O when there are outliersResearch | ECU Dep wered all parts of the question. Stuinber them the way they are on the exam. Be su D Question 8 1 pts The mean IQ score is 100 with a standard deviation of 15. Given this information, which of the following statements is correct? O Someone with a score of 130 scored two standard deviations above the mean O Someone with a score of 70 scored two standard deviations above the mean Someone with a score of 85 scored two standard deviations above the mean Someone with a score of 115 scored two standard deviations above the meanare on the exam. B 19estion. Question 16 1 pts The difference between each score in a distribution and the mean score will always add up to: 0 1 O -1 It depends on the numbers on the distributionon the exam. Bes Question 22 1 pts Which of the following actions will have no effect on the value of the standard deviation? O Multiply each score in the distribution by 2 Subtract 5 points from every score in the distribution Divide each score in the distribution by 2 All of theseQuestion 18 1 pts In N - 25 games last season, the college basketball team averaged u = 76 points with a standard deviation of - 6. In their final game of the season, the team scored 89 points. Based on this information, the number of points scored in the final game was above average, but it is impossible to describe how much above average There is not enough information to compare last year with the average. O a little above average far above averageif the exam. Be su Question 21 1 pts Which of the following z-score values represents the location closest to the mean? O z = +1.00 O z = -2.00 Oz = +0.50 Oz = -1.00Ull the exam. Question 15 1 pts A vertical line drawn through a normal distribution at z = 0.50 separates the distribution into two sections, the body and the tail. What proportion of the distribution is in the body? O 0.3830 O 0.1915 0.6915 0.3085of your work which the way they are on the exam. B all parts of the question. D Question 6 1 pts When the variance is equal to zero. O the raw scores are negative O all of the raw scores are the same O the standard deviation is equal to 1 the variance can never be equal to zeroon the exam. B D Question 7 1 pts Dr. Mitchell administers a standardized logic test to his 44 students. The mean for the class is 64, and the standard deviation for the class is 8.25. Dr. Mitchell adds 10 points to all of the scores. What is the standard deviation after Dr. Mitchell added 10 points to each score? 18.25 0 74 8.25 825they are on the exam. Be question. Question 20 1 pts Which of the following represents a conditional probability? O the probability you live to 79 years old the probability of seeing lightning if it is raining the probability of getting a speeding ticket whenever you drive the probability of getting cancer each yearExam. Be Question 14 1 pts If the mean u = 50 and X - 40, then we know that: O Z will be positive for X Z will be equal to zero for X O not enough information to answer the question Z will be negative for XExam, Be Question 11 1 pts If an entire population with - 60 and - 8 is transformed into z-scores, then the distribution of Z-scores will have a mean of and a standard deviation of 0 0;1 60; 1 60; 8 1 0; 8