A company is in the business of finding addresses of long-lost friends. The company claims to have a 80% success rate. Suppose that you have the names of six 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 6 friends for whom an address will be found. (b) Find the mean and standard deviation of this probability distribution. (Round your answer to two decimal places.) μ = friends σ = friends What is the expected number of friends for whom addresses will be found? (Round your answer to two decimal places.)
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.
A company is in the business of finding addresses of long-lost friends. The company claims to have a 80% success rate. Suppose that you have the names of six friends for whom you have no addresses and decide to use the company to track them.
(b) Find the mean and standard deviation of this probability distribution. (Round your answer to two decimal places.)
| μ = friends |
| σ = friends |
What is the expected number of friends for whom addresses will be found? (Round your answer to two decimal places.)
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