After being rejected for employment, Kim Kelly learns that the Bellevue Credit C

Cem Hayes

Cem Hayes

Answered question

2021-10-02

After being rejected for employment, Kim Kelly learns that the Bellevue Credit Company has hired only two women among the last 19 new employees. She also learns that the pool of applicants is very large, with an approximately equal number of qualified men as qualified women.
Help her address the charge of gender discrimination by finding the probability of getting two or fewer women when 19 people are hired, assuming that there is no discrimination based on gender.
(Report answer accurate to 8 decimal places).

Answer & Explanation

Margot Mill

Margot Mill

Skilled2021-10-03Added 106 answers

The binomial probability distribution
P(X=x)=(nx)(p)x(1p)nx
Let x be the number of women hired which follows binomial with sample size 19 and probability of success 0.5

The probability of getting two or fewer women when 19 people are hired is,
P(X2)=P(X=0)+P(X=1)+P(X=2)
=(190)(0.5)0(10.5)190+(191)(0.5)1(10.5)191+(192)(0.5)2(10.5)192
=0.00000191+0.00003624+0.00032616=0.00036431
The probability of getting two or fewer women when 19 people are hired is 0.00036431.

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