04 May Question Question 1 5 out of 5 points A testing bureau reports that the mean for the population of Graduate Record Exam (GRE) scores is 500 with a standard deviation of 90. The scores are normally distributed. The raw score that lies at the 90th percentile is _________. Question 2 5 out of 5 points Table A in your textbook has no negative z values, this means _________. Question 3 5 out of 5 points A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38. What percentage of the distribution lies between $5 and $11? Question 4 5 out of 5 points The standard deviation of the z distribution equals _________. Question 5 5 out of 5 points A distribution has a mean of 60.0 and a standard deviation of 4.3. The raw score corresponding to a z score of 0.00 is _________. Question 6 5 out of 5 points A standardized test has a mean of 88 and a standard deviation of 12. What is the score at the 90th percentile? Assume a normal distribution. Question 7 5 out of 5 points Given the following set of sample raw scores, X: 1, 3, 4, 6, 8. What is the z transformed value for the raw score of 3? Question 8 5 out of 5 points If a population of scores is normally distributed, has a mean of 45 and a standard deviation of 6, the most extreme 5% of the scores lie beyond the score(s) of _________. Question 9 5 out of 5 points If a distribution of raw scores is negatively skewed, transforming the raw scores into z scores will result in a _________ distribution. Question 10 5 out of 5 points All bell-shaped curves _________. Question 11 5 out of 5 points A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38. The stock price beyond which 0.05 of the distribution falls is _________. Question 12 5 out of 5 points Assuming the z scores are normally distributed, what is the percentile rank of a z score of -0.47? Question 13 5 out of 5 points If you transformed a set of raw scores, and then added 15 to each z score, the resulting scores _________. Question 14 5 out of 5 points A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38. What percentage of the distribution lies below $7.42. Question 15 5 out of 5 points An economics test was given and the following sample scores were recorded: Individual A B C D E F G H I J Score 12 12 7 10 9 12 13 8 9 8 The z score for individual E is _________. Question 16 5 out of 5 points A testing service has 1000 raw scores. It wants to transform the distribution so that the mean = 10 and the standard deviation = 1. To do so, _________. Question 17 5 out of 5 points The mean of the z distribution equals _________. Question 18 5 out of 5 points On a test with a population mean of 75 and standard deviation equal to 16, if the scores are normally distributed, what percentage of scores fall between 70 and 80? Question 19 5 out of 5 points An economics test was given and the following sample scores were recorded: Individual A B C D E F G H I J Score 12 12 7 10 9 12 13 8 9 8 The z score for individual D is _________. Question 20 5 out of 5 points A distribution has a mean of 60.0 and a standard deviation of 4.3. The raw score corresponding to a z score of -1.51 is _________.
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