Please help The CEO of a clothing company estimated that 52% of customers will make a purchase.

Part A: How many customers should a salesperson expect until she finds a customer that makes a purchase?

Part B: What is the probability that a salesperson helps 3 customers until she find the first person to make a purchase?

thank you so much in advance for your help!

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e. g. 98.7654). x f(x) 0 1 2 3

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25

Arestaurant added a new outdoor section that was 8 feet wide and 6 feet long. what is the area of their new outdoor section