(Solved): New employees at a company are given a proficiency test. The test scores are approximately normally ...
New employees at a company are given a proficiency test. The test scores are approximately normally distributed with a mean of 250 and a standard deviation of 10. A new employee scores 257 on the exam. What is the employee's z-score?
To calculate the employee's z-score, we can use the formula:
z-score = (x - ?) / ?
Where:
x = individual value (employee's score)
? = population mean
? = population standard deviation