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, and you have been requested to review the 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 74 and 4, respectively, and the distribution of scores is mound-shaped and symmetric. Suppose the trainee in question received a score of 65. Compute the trainee's z-score.
A) z = -36 B) z = -2.25 C) z = 0.82 D) z = -9
Question 2
We believe that 78 of the population of all Business Statistics students consider statistics to be an exciting subject. Suppose we randomly and independently selected 29 students from the population and observed fewer than five in our sample who consider statistics to be an exciting subject. Make an inference about the belief that 78 of the students consider statistics to be an exciting subject.
A) The 78 number is too low. The real percentage is higher than 78.
B) The 78 number is exactly right.
C) The 78 number is too high. The real percentage is lower than 78.
D) It is impossible to make any inferences about the 78 number based on this information.
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