A company is in the business of finding addresses of long-lost friends. The company claims to have a 74% success rate. Suppose that you have the names of five friends for whom you have no addresses and decide to use the company to track them. (a) Find the mean and standard deviation of this probability distribution. What is the expected number of friends for whom addresses will be found? (Round your answers to two decimal places.) ? = friends ? = friends (b) What is the smallest number of names would you have to submit to be at least 96% sure that at least two addresses will be found? (Enter your answer as a whole number.) names
A company is in the business of finding addresses of long-lost friends. The company claims to have a 74% success rate. Suppose that you have the names of five friends for whom you have no addresses and decide to use the company to track them. (a) Find the mean and standard deviation of this probability distribution. What is the expected number of friends for whom addresses will be found? (Round your answers to two decimal places.) ? = friends ? = friends (b) What is the smallest number of names would you have to submit to be at least 96% sure that at least two addresses will be found? (Enter your answer as a whole number.) names
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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A company is in the business of finding addresses of long-lost friends. The company claims to have a 74% success rate. Suppose that you have the names of five friends for whom you have no addresses and decide to use the company to track them.
(a) Find the mean and standard deviation of this probability distribution. What is the expected number of friends for whom addresses will be found? (Round your answers to two decimal places.)
(b) What is the smallest number of names would you have to submit to be at least 96% sure that at least two addresses will be found? (Enter your answer as a whole number.)
names
| ? = friends |
| ? = friends |
(b) What is the smallest number of names would you have to submit to be at least 96% sure that at least two addresses will be found? (Enter your answer as a whole number.)
names
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