The phone lines to a tourism department reservation system are occupied 30% of the time. Assume that the events that the lines are occupied on successive calls are independent. Assume that 10 calls are placed to the tourism department. a) What is the probability that for exactly 2 calls the lines are occupied? b) What is the probability that for at least one call the lines are not occupied? c) What is the expected number of calls in which the lines are all occupied?
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.
The phone lines to a tourism department reservation system are occupied 30% of the time.
Assume that the
Assume that 10 calls are placed to the tourism department.
a) What is the
b) What is the probability that for at least one call the lines are not occupied?
c) What is the expected number of calls in which the lines are all occupied?
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