BUS308: Statistics for Managers

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This assignment is due ASAP.

 

Problem 1

 

The performances of a group of interns are evaluated by their supervisors at the end of their internships. 

 

Their scores are: 55, 47, 62, 27, 50, 49, 66, 53, 50, 44, 63, 59. 

 

Complete the calculations below using this data.  Show all of your work and clearly label each of your calculations.   

 

the mean

the median

the range

the standard deviation

the variance

 

 

Problem 2

 

The Anxiety General Stress Test (ANGST) has been designed to gauge the level of psychological stress management trainees experience when they are under pressure. 

 

For a random sample of trainees the scores are as follows: 47, 49, 53, 53, 54, 58, 61, 64, 75, 81.

 

Complete the calculations below using this data.  Show all of your work and clearly label each of your calculations.   

 

What is the z score equivalent of ANGST = 81?

What is the probability that someone selected at random will score 81 or lower?

What percentage of all trainees will score between 60 and 75?

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