SOLUTION: 2. A salesperson contacts ten potential customers. From past experience, we know that for each potential customer, the probability of them making a purchase is .10. [1]

Question 1136747: 2. A salesperson contacts ten potential customers. From past experience, we know that for each potential
customer, the probability of them making a purchase is .10.
[1] a. What is the probability the salesperson will make exactly one sale?

[1] b. What is the probability of making no sales?

[1] c. What is the probability the salesperson will make at least one sale?

[1] d. What is the expected number of sales?

[1] e. What is the standard deviation for the number of sales?

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
binomial with n=10 and p=0.1
expected value is that product or 1
variance is 1*(1-p)=.9
sd is sqrt of 0.9 or 0.949
probability of 1 sale is 10*0.1^1*0.9^9=0.3874
probability of no sales is 0.9^10=0.3487
probability of at least 1 sale is 1-prob of no sales or 0.6513
RELATED QUESTIONS
a sales representative has a 65 % chance of winning an order. the sales representative... (answered by Boreal)

Can someone please help me, I did the work but I�m unsure if I did it correctly. I got... (answered by math_helper)

Assume that a local bank knows from past experience that between 10am and 11am each day... (answered by stanbon)

The financial institution has asked your firm to place some spot advertisements. The... (answered by Mathtut)

A company has $14,830 available per month for advertising. Newspaper ads cost $190 each... (answered by ikleyn)

Past experience indicates that an average number of 6 customers per hour stop for... (answered by ewatrrr)

Suppose a furniture store found that 20% of the people who enter buy something. Three... (answered by solver91311)

1. A salesperson has 65 percent chance of making a sale to a customer. The behavior of... (answered by ikleyn)

Label each of the following situations �P� if it is an example of parametric data or �NP� (answered by stanbon)