Give the numerical value of the parameter n in the following binomial distribution scenario.
The probability of buying a movie ticket with a popcorn coupon is 0.597 and without a popcorn coupon is 0.403. If you buy 18 movie tickets, we want to know the probability that no more than 13 of the tickets
have popcorn coupons.

Consider tickets with popcorn coupons as successes in the binomial distribution. Find N