Question: After your presentation, a number of students have asked you how to create effective bar graphs to accurately represent data.
Bar graphs can be constructed from data and then used to find probabilities. The following information has been given to you by Colorado Technical University that shows the highest level of education received by a sample of the school's staff population.

Part 1

With the information provided, use computer software to create a column bar graph. Answer the following questions:

? What is the probability that an employee chosen at random has a PhD?

? What is the probability that an employee chosen at random has an Associate's degree?

? What is the probability that an employee chosen at random does not have a PhD?

? Are the events independent? Explain.