According to estimates, 44 percent of Bangladeshis have blood type B+. Suppose, you have started to sample people as you are looking for B+ blood type. Once you find a person with B+ blood type, you’ll stop sampling immediately. What's the probability that you'll need to sample exactly 6 people to find someone with blood type B+? What is the expected number of people to sample in order to find someone with that blood type and what is the standard deviation?

According to estimates, 44 percent of Bangladeshis have blood type B+. Suppose, you have started to sample people as you are looking for B+ blood type. Once you find a person with B+ blood type, you’ll stop sampling immediately. What's the probability that you'll need to sample exactly 6 people to find someone with blood type B+? What is the expected number of people to sample in order to find someone with that blood type and what is the standard deviation?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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