developed a new calculator that performs a series of functions not yet performed by any other calculator. The marketing department is planning to demonstrate this calculator to a group
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.
Southwestern Electronics has developed a new calculator that performs a series of
planning to demonstrate this calculator to a group of potential customers, but it is
worried about some initial problems, which have resulted in 4 percent of the new
calculators developing mathematical inconsistencies. The marketing VP is planning
on randomly selecting a group of calculators for this demonstration and is worried
about the chances of selecting a calculator that could start malfunctioning. He
believes that whether or not a calculator malfunctions is a Bernoulli process, and he
is convinced that the probability of a malfunction is really about 0.04. Assuming that
the VP selects exactly 50 calculators to use in the demonstration, and using the
Poisson distribution as an approximation of the binomial, what is the chance of
getting at least three calculators that malfunction?
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