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Michelle, a telemarketer makes six phone calls per hour and is able to make a sale on 30% of these contacts. During the next two hours, find: 1. The probability of making exactly four sales. 2. The probability of making no sales. 3. The probability of making exactly two sales. The mean number of sales in the two-hour period

Michelle, a telemarketer makes six phone calls per hour and is able to make a sale on 30% of these contacts. During the next two hours, find: 1. The probability of making exactly four sales. 2. The probability of making no sales. 3. The probability of making exactly two sales. The mean number of sales in the two-hour period

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Please answer the following question on Excel. Thank you

Michelle, a telemarketer makes six phone calls per hour and is able to make a sale on 30% of these contacts. During the next two hours, find: 1. The probability of making exactly four sales. 2. The probability of making no sales. 3. The probability of making exactly two sales. The mean number of sales in the two-hour period
Transcribed Image Text:Michelle, a telemarketer makes six phone calls per hour and is able to make a sale on 30% of these contacts. During the next two hours, find: 1. The probability of making exactly four sales. 2. The probability of making no sales. 3. The probability of making exactly two sales. The mean number of sales in the two-hour period
Expert Solution
Step 1

The random variable X is making sales.

The number of cars per hour is 6.

The probability of making a sale is p=0.3

Making the sale is independent of each other.

Therefore random variable X follows a binomial distribution.

The probability mass function of the binomial distribution is as follows.

P(X=x)=Cxnpx(1-p)n-x        X=0,1,...n

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