Question

A television store owner figures that 50 percent of the customers entering his

store will purchase an low end television set, 20 percent will purchase a high end

television set, and 30 percent will just be browsing. If five customers enter his

store on a certain day, what is the probability that two customers purchase high end sets, one customer purchases an low end set, and two customers purchase

nothing?​

Answer 1

Step-by-step explanation:

A television store owner figures that 50 percent of the customers entering his store will purchase an ordinary television set, 20 percent will purchase a color television set, and 30 percent will just be browsing

Answer 2

Answer:

Hint : Use the formula for Multinomial distribution.

Step-by-step explanation:

x1, x2, x3 be # customers purchasing high end, low end and nothing respectively - p1, p2, p3 be corresponding probabilities

x1 = 2,     x2 = 1,     x3 = 2

p1 = 0.2, p2 = 0.2  p3 = 0.5

n = x1 + x2 + x3 = 5 ,

Use these in the formula below

$\frac{n!}{x1! * x2! * x3! ... * xr!} * p1^{x1} p2^{x2} p3^{x3} ... pr^{xr}$