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21. Still more lefties. Suppose we choose 12 people
Chapter 17, Problem 21(choose chapter or problem)
21. Still more lefties. Suppose we choose 12 people insteadof the 5 chosen in Exercise 17.a) Find the mean and standard deviation of the numberof right-handers in the group.b) Whats the probability thati) theyre not all right-handed?ii) there are no more than 10 righties?iii) there are exactly 6 of each?iv) the majority is right-handed?
Questions & Answers
QUESTION:
21. Still more lefties. Suppose we choose 12 people insteadof the 5 chosen in Exercise 17.a) Find the mean and standard deviation of the numberof right-handers in the group.b) Whats the probability thati) theyre not all right-handed?ii) there are no more than 10 righties?iii) there are exactly 6 of each?iv) the majority is right-handed?
ANSWER:Step 1 of 4
Probability of success:
Probability of failure:
Number of trials: