Assume that when shopping for a PS5, the probability of finding the PS5 at any given store is .25. We’ll assume that this is modeled by a binomial distribution that uses the formula P(x = k) Assuming that n = 9 people go shopping for the PS5, (a) what is the probability that 3 people will find the PS5? (b) what is the probability that at least 2 people will find the PS5? (c) what is the expected number (µ) of the 9 people that can find the PS5 when going shopping? (d) what is the standard deviation σ of the 9 people that can find the PS5 when shopping?
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.
Assume that when shopping for a PS5, the
any given store is .25. We’ll assume that this is modeled by a binomial distribution that uses the formula P(x = k)
Assuming that n = 9 people go shopping for the PS5,
(a) what is the probability that 3 people will find the PS5?
(b) what is the probability that at least 2 people will find the PS5?
(c) what is the expected number (µ) of the 9 people that can find the PS5 when going
shopping?
(d) what is the standard deviation σ of the 9 people that can find the PS5 when shopping?
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