math
posted by manny .
The probability that a person has immunity to a particular disease is 0.3. Find the mean and standard deviation for the random variable x, the number of people who have immunity in samples of size 28.
This is a binomial distribution.
mean= 28*.3
standard deviation= sqrt (28*.3(1.3))
http://www.stat.yale.edu/Courses/199798/101/binom.htm
This is a binomial distribution.
mean= 28*.3
standard deviation= sqrt (28*.3(1.3))
http://www.stat.yale.edu/Courses/199798/101/binom.htm
ok got it
thanks
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