A technician services mailing machines at companies in the Phoenix area. Depending on the type of malfunction, the service call can take 0.9,1.8,2.7,or 3.6 hours. The different types of malfunctions occur at the same frequency. a. Develop a probability distribution for the duration of a service call. Duration of Call x f(x) 0.9 1.8 2.7 3.6 Total b. What is the probability a service call will take 2.7 hours ? c. A service call has just come in, but the type of malfunction is unknown. It is 3:00 P.M. and service technicians usually get off at 5:00 P.M. What is the probability the service technician will have to work overtime to fix the machine today?
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
A technician services mailing machines at companies in the Phoenix area. Depending on the type of malfunction, the service call can take 0.9,1.8,2.7,or 3.6 hours. The different types of malfunctions occur at the same frequency.
a. Develop a
| Duration of Call | |
| x | f(x) |
| 0.9 | |
| 1.8 | |
| 2.7 | |
| 3.6 | |
| Total |
b. What is the probability a service call will take 2.7 hours ?
c. A service call has just come in, but the type of malfunction is unknown. It is 3:00 P.M. and service technicians usually get off at 5:00 P.M. What is the probability the service technician will have to work overtime to fix the machine today?
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