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Binomial Probability of Commuting

If 50% of all commuters ride the train to work, find the probability that if 10 workers are selected,

a. 3 will ride the train.

b. 1 will ride the train

c. 0 will ride the train

d. 5 will ride the train

Solution Preview

We are going to use the formula
P(k out of n) = --------------- p^k q^(n-k)

a. 3 will ride the train.

n = 10, k = 3, p = 0.5 and q = ...

Solution Summary

This response determines the probability that worker selected from a pool of 10 people would ride the train to work.