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

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 70E: Determine if the statement is true or false. If the statement is false, then correct it and make it...
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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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