Tories bookcase holds one algebra book one geometry book and 12 books about advanced engineering mathematics. Books are taken at random from her book

Albarellak

Albarellak

Answered question

2021-02-08

Tories bookcase holds one algebra book one geometry book and 12 books about advanced engineering mathematics. Books are taken at random from her book case, one after another without replacement until an engineer book is had, at which no more books are taken. The random variable Z represents the total number of books taken during this experiment.
Find Pr[z=3]

Answer & Explanation

SoosteethicU

SoosteethicU

Skilled2021-02-09Added 102 answers

Step 1
Given information
Torries bookcase holds
1 algebra book
1 geometry book
12 advanced engineering mathematics books
Total books = 14
Selection is made without replacement
Books are taken until engineering book has been taken
Let z denotes the total number of books taken
Step 2
Z=3 means the first two must be other than engineering books and last must be the engineering book
P(Z=3)=214×113×1212=191=0.011(Rounded upto 3 decimals places)

Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?