187 visitors purchased no costume, 228 visitors purchased exactly one costume, 29 visitors purchased more than one costume.

Question

Express the probability that the next person will purchase no more than one costume as a percent to the nearest whole number

Answer 1

To find the probability that the next person will purchase no more than one costume, we need to add the number of visitors who purchased zero or one costume and divide it by the total number of visitors:

P(purchase no more than one costume) = (187 + 228) / (187 + 228 + 29) = 415 / 444

To express this as a percentage, we multiply by 100:

P(purchase no more than one costume) = 93.47%

Rounding to the nearest whole number, the probability is 93%.