Part 2. (6 points) Normal Distributions Some companies "grade on a bell curve" to compare the performance of their managers and professional workers. This forces the use of some low performance ratings so that not all workers are listed as "above average." Ford Motor Company's "performance management process" for this year assigned 10% A grades, 80% B grades, and 10% C grades to the company's managers. Suppose Ford's performance scores really are Normally distributed. This year, managers with scores less than 150 received C grades and those with scores of at least 356 received A grades.
a. (2 point) What are the z scores associated with the 10th and 90th percentiles from the standard normal distribution?
b. (2 point) What is the mean and standard deviation of the performance scores? Show work.
c. (2 point) Suppose the company adds grades D and F so there are 5 categories to grade performance. If they want to give A’s only to those in the top 3%, what performance score must a manager exceed to get an A?
Part 2. (6 points) Normal Distributions Some companies "grade on a bell curve" to compare the...
Will rate!! Part 2.(6 polnts) Normal Distrlbutlons Some companies "grade on a bell curve" to compare the performance of their managers and professional workers. This forces the use of some low performance ratings so that not all workers are listed as "above average." Ford Motor Company's "performance management process" for this year assigned 10% A grades, 80% B grades, and 10% C grades to the company's managers. Suppose Ford's performance scores really are Normally distributed. This year, managers with scores...
Will rate!! Show work plz Part 2.(6 polnts) Normal Distributions Some companies "grade on a bell curve"to compare the performance of their managers and professional workers. This forces the use of some low performance ratings so that not all workers are listed as "above average." Ford Motor Company's "performance management process for this year assigned 10% A grades, 80% B grades, and 10% C grades to the company's managers. Suppose Ford's performance scores really are Normally distributed. This year, managers...
1. Some companies “grade on a bell curve” to compare the performance of their managers and professional workers. This forces the use of some low performance ratings so that not all workers are listed as “above average.” Ford Motor Company’s “performance management process” decides to give A to managers and professional workers who score in the top 15% on their performance reviews, C’s to those who score in the bottom 15%, and B’s to the rest. Suppose that Ford’s performance...
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