A retailer claims that 90% of its customers are pleased or very pleased with the customer service.
Question:
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:
a. 85% or more will be pleased or very pleased with the service?
b. 92% or more will be pleased or very pleased with the service?
c. Between 85% and 92% will be pleased or very pleased with the service?
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Related Book For 
Basic Statistics For Business & Economics
ISBN: 9781259268939
6th Canadian Edition
Authors: Douglas A. Lind, William G Marchal, Samuel A. Wathen, Carol Ann Waite
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