Historical data indicates that only 20% of cable customers are willing to switch companies. if a binomial process is assumed, then in a sample of 20 cable customers, what is the probability that no more than 3 customers would be willing to switch their cable?
a. 0.15
b. 0.411
c. 0.85
d. 0.20

= =0.4114

Explanation:

Given that ;

p=0.20

n = 20

Therefore we can compute the probability as;

where,

P[X=0] = 0.0115

P[X=1] = 0.0576

P[X=2] = 0.1369

P[X=3] = 0.2054

Therefore;

=0.0115+0.0576 +0.1369 + 0.2054  

=0.4114

1   all nations face the problem of scarcity because there are limited resources and unlimited wants. nations do not have enough factors of production to produce everything that their population wants. entrepreneurial resources initiate businesses to make new goods and services; labor resources produce goods and services.

2 there are four factors of production: natural resources, labor resources, capital resources, and entrepreneurial resources. natural resources are raw materials from nature that are used to produce goods. trees, water, and grains are natural resources. some natural resources, such as wheat and cattle, are renewable

3 wants

things that you do not need to have in order to survive, but would like to have

needs

things that you must have in order to survive

goods

physical products

services

tasks that a business perform for customers

resources

items that people can use to make or obtain what they need or want

determine

to settle or decide by choice of alternatives or possiblities

4 i really dont know