Southwestern Electronics has developed a new calculator that performs a series of functions not yet performed by any other calculator. The marketing department is planning to demonstrate
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
From the available information,
The probability of malfunction of calculator is, p=0.04
Number of calculators, n=50
Use the poisson distribution as an approximation to binomial distribution.
Here, the parameter of poisson distribution 
is equal to np.
That is,
The probability mass function of poisson distribution is,
Step by step
Solved in 2 steps with 4 images
