A shooter has 4 bullets. He shoots at the target until he hits it for the first time . And stop shooting if he shoot all four bullets. The probability that he can hits the target for each time is 0.7 . Let X be the number of bullets used. Find EX

A shooter has 4 bullets. He shoots at the target until he hits it for the first time . And stop shooting if he shoot all four bullets. The probability that he can hits the target for each time is 0.7 . Let X be the number of bullets used. Find EX

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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Question

A shooter has 4 bullets.

He shoots at the target until he hits it for the first time .

And stop shooting if he shoot all four bullets.

The probability that he can hits the target for each time is 0.7 .

Let X be the number of bullets used. Find EX

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