Consider the following 2 systems: System A: has 5 components each of which has a constant failure rate function r(t) = 4x10 per hour. System B: has 8 components each of which has a failure rate function r(t)=kx10 xt. In each system all components must work in order for the whole system to work. Assume that both systems have the same mean time to failure. a) Find the value of k. b) Which system is better to work continuously for 20 hours?

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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.