SOLUTION: The probability that a salesperson will make a sale is 0.8. What is the probability (assuming independence) that on two calls made in a day the salesperson will: a. make two sales

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Question 353036: The probability that a salesperson will make a sale is 0.8. What is the probability (assuming independence) that on two calls made in a day the salesperson will:
a. make two sales?
b. Make at least one sale?
c. Make no sales?

Found 2 solutions by stanbon, robertb:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The probability that a salesperson will make a sale is 0.8. What is the probability (assuming independence) that on two calls made in a day the salesperson will:
a. make two sales?::::0.8^2 = 0.64
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c. Make no sales?:::0.2^2 = 0.04
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b. Make at least one sale? :::
P(at least one sale) = 1 - P(no sales)
= 1 - 0.04
= 0.96
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Cheers,
Stan H.

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Probability of making a sale = 0.8
Probability of not making a sale = 0.2
a) Probability of making two sales = 0.8%2A0.8+=+0.64
b) probability of making at least one sale = 2%2A0.8%2A0.2+=+0.32
c) probability of making no sales = 0.2%2A0.2+=+0.04