MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Concept explainers

Estimation
A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.
Question

A study conducted at Santa School shows that 70% of the School's graduates find a job as a Santa within one year of graduation. Find the probability that among 10 randomly selected graduates, at least 1 find a job as a Santa within one year of graduation.
(Show all decimals. Do not round.)

P(x at least one) =

Expert Solution
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Step 1

Given:
Probability (find a job as a Santa within one year of graduation) = 70% =0.70
Sample size (n) =10

This is the case of the binomial distribution, as there are two possible outcomes with a fixed number of trails.

The full binomial probability formula is

Statistics homework question answer, step 1, image 1

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