Binomial Probability Distributions
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1. Finding μ, σ, and Unusual Values.
Assume that a procedure yields a binomial distribution with N trials and the probability of success for one trial is P. Use the given values of N and P to find the mean N and standard deviation σ, Also, use the range rule of thumb to find the minimum usual value μ - 2σ and the maximum usual value μ + 2σ.
N=767, P= 1/6
2. Ten percent of American adults are left-handed. A statistics class has 25 students in attendance.
a. Find the mean and standard deviation for the number of left-handed students in such classes of 25 students.
b. Would it be unusual to survey a class of 25 students and find that 5 of them are left-handed? Why or why not?
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Solution Summary
The solution contains the determination of mean and standard deviation and unusual values by range rule of thumb using Binomial distribution.
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