a company is in the business of finding addresses of long lost friends. the company claims to have a 70% success rate. suppose that you have the name of nine long lost friends for whom you have no addresses and decide to use the company to track them.   a) make a histogram showing the probability of r=0 to 9 friends for whom an address will be found.   b) find the mean and standard deviation of this probability distribution. what is the expected number of friends for whom addresses will be found? ( round to to decimal points)   c) what is the smallest number of names would you have to submit to be at least 96% sure that at least two addresses will be found? (enter answer as a whole number)

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Q: E[X]=μX=E[X]=μX= dollars. (Round the answer to 1 decimal place.)  SD[X]=σX=SD[X]=σX= dollars. (Round…

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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.