represen (a) What percent of the department faculty have 5 or more years of service? Answer: (b) If a member of the department is chosen at random to serve on a university committee, what is the probability (in decimal form) that the chosen representitive will have between 5 and 25 years of service? Answer: (c) What is the probability the representative above will have less than 5 years of service given that the person has less than 20 years of service? Answer: Hathenatics and Statistics Faculty 14 13 - 12 11 10 8 7 3 2 1 10 15 20 25 30 Years of Service

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.