If the probability of being left handed is 0.23 and the probability of being right handed is 0.77 what is the probability of having a family of seven all left handed

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter6: Ratio, Proportion, And Probability
Section6.7: Probability And Odds
Problem 1C
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If the probability of being left handed is 0.23 and the probability of being right handed is 0.77 what is the probability of having a family of seven all left handed
Expert Solution
Step 1

Let X be the number left handed

let p be the probability of being left handed 

q be the probability of being right handed 

n=sample size

Given

n=7, p=0.23, q=0.77

X~Bin(n=7,p=0.23)

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