Probability of ordering a nonalcoholic beverage is,
Number of samples are
Now, the complement of event 'N' is not ordering a nonalcoholic beverage.
Therefore,
Now, for a sample of '10' customers, the probability of not ordering a non alcoholic beverage is product of their individual probabilities as all these events are independent events.
Therefore, probability that none of the 10 will order a nonalcoholic beverage is given as: