QNT 351

Question 1- What are the characteristics of standard normal distribution? The HR department of an organization collects data on employees’ age, salary, level of education, gender, and ethnicity. Which data do you think is more likely to follow normal distribution? Explain why. 

 

Question 2-

 

An oil change company advertises that they can change the oil in your car in 15 minutes. Based on the data collected below, what is the probability that oil change will take more than 15 minutes? Using this example as a template, post a similar example from your experience.

   

3

8

6

2

1 

Class Interval	Frequency
6 to 10 minutes
11 to 15 minutes
16 to 20 minutes
21 to 25 minutes
More than 25 Minutes