2) Seventy five percent of U. S. mothers with school-age children choose fast food as a dining
option for their families one to three times a week. You randomly select ten U. S. mothers with
school-aged children and ask whether they choose fast food as a dining option for their families
one to three times a week. The random variable represents the number of U. S. mothers who
choose fast food as a dining option for their families one to three times a week

(A)Find the mean, variance, and standard deviation for the binomial distribution

(B)If ten mothers chose fast food as a dining option for their families one to three times a week,
would this be considered an unusual event? Be sure to justify your answer using mathematics.