Many firms use on-the-job training to teach their employees computer programming. Suppose you work in the personnel department of a firm that just finished training a group of its employees to program performance of one of the trainees on the final test that was given to all trainees. The mean and standard deviation of the test scores are 85 and 2, respectively, and the distribution of scores is bell-shape received a score of 84. Compute the trainee's z-score. A. Z=0.96 B. Z=-0.96 OC. Z= -0.50 OD. z=0.5

Mr. Stant collected information on how much customers spend at Walmart and Target. He created the following histograms. Which of the statements must be true about the two data sets displayed?  a The standard deviation of amounts spent at Walmart is less than the standard deviation of the amounts spent at Target.  b The median amount spent at Walmart is equal to the median amount spent at Target.  c The standard deviation of amounts spent at Walmart is more than the standard deviation of the amounts spent at Target.  d The range of amounts spent at Walmart is equal to the range of amounts spent at Target.  e The mean amount spent at Walmart is equal to the mean amount spent at Target.

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: - 2.00, - 1.00, 0, 1.00, 2.00? Why? OA The z score of 1.00 is most preferable because it is 1.00 standard deviation above the mean and would correspond to an above average test score. O B. The z score of 0 is most preferable because it corresponds to a test score equal to the mean. OC. The z score of - 1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average test score. OD. The z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. O E. The z score of -2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. O Time MacBook PrO -> G Search or type URL esc ! @ #3 2$ % 2 4 6. 7 8 R Y P Q tab A S F G K caps…

A student scores 74 on a geography test and 264 on a mathematics test. The geography test has a mean of 80 and a standard deviation of 5. The mathematics test has a mean of 300 and a standard deviation of 24. If the data for both tests are normally distributed, on which test did the student score better relative to the other students in each class? OA. The student scored better on the mathematics test. OB. The student scored better on the geography test. OC. The student scored the same on both tests.