Purchasing magazine reported the results of a survey in which buyers were asked a series of questions with regard to internet usage. One question asked was how they would use the internet if security and other issues could be resolved. Seventy-eight percent said they would use it for pricing information, 75% said they would use it to send purchase orders, and 70% said they would use it for purchase order acknowledgments. Assume that these percentages hold true for all buyers. A researcher randomly samples 20 buyers and asked them how they would use the internet if security and other issues could be resolved. What is the probability that fewer than 12 would use the internet for purchase orders acknowledgments?
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.
Purchasing magazine reported the results of a survey in which buyers were asked a
series of questions with regard to internet usage. One question asked was how they
would use the internet if security and other issues could be resolved. Seventy-eight
percent said they would use it for pricing information, 75% said they would use it
to send purchase orders, and 70% said they would use it for purchase order
acknowledgments. Assume that these percentages hold true for all buyers. A
researcher randomly samples 20 buyers and asked them how they would use the
internet if security and other issues could be resolved. What is the
fewer than 12 would use the internet for purchase orders acknowledgments?
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