60% of customers who enter a department store will make a purchase. Out of 4 randomly selected customers, what is the probability at least one of them makes a purchase? Round to the nearest whole percent. 49% 97% 50% 78%
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.
60% of customers who enter a department store will make a purchase. Out of 4 randomly selected customers, what is the
Introduction:
Denote X as the random variable of interest here, which is the number of people entering the department store who make a purchase.
Consider it to be a success if a sampled person entering the store makes a purchase. It may be considered that the sampled people enter the store independently of each other, as the population of people that can potentially enter the store is large, and the sample size of 4 people is very small in comparison.
As 60% of the customers entering the store makes a purchase, the probability of “success” or probability of a person entering the store and making a purchase is p = 60% = 0.6.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 3 images
