MATH MAT 133 5-3 Homework Assignment Solutions.

Homework Problem 7

Find the mean (2 decimal places) and standard deviation (4 decimal places) for

each binomial random variable.

This is a binomial problem.

 n = number of trials

 p = probability of success (Your text uses the symbol pi instead of p)

 q = 1 - p which is the probability of failure.

There are formulas for the mean & standard deviation.

To find the mean.

 Multiply n•p.

To find the standard deviation.

 Mult...
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