A Retailer Claims That 90% of Its Customers Are "Pleased

Multiple Choice

A retailer claims that 90% of its customers are "pleased" or "very pleased" with the customer service. In a survey of 300 customers taken last week, what is the probability that between 80% and 90% will be "pleased" or "very pleased" with the service?

A) 0.1736
B) 0.5736
C) 0.3464
D) Almost 100%
E) Almost 50%