SOLUTION: Here is my question (I have searched the textbook, tried every potential formula yet I am utterly lost):
About 25% of those called will find an excuse (work, poor health, travel
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About 25% of those called will find an excuse (work, poor health, travel
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Question 582264: Here is my question (I have searched the textbook, tried every potential formula yet I am utterly lost):
About 25% of those called will find an excuse (work, poor health, travel out of town, etc.) to avoid jury duty†. If 11 people are called for jury duty, find the following:
a. What is the probability that all 11 will be available to serve on the jury? (Round your answer to three decimal places.)
b. What is the probability that 5 or more will not be available to serve on the jury? (Round your answer to three decimal places.)
c. Find the expected number of those available to serve on the jury. What is the standard deviation? (Round your answers to two decimal places.)
d. How many people n must the jury commissioner contact to be 95.9% sure of finding at least 12 people who are available to serve? Answer by zach222(1) (Show Source):
(