Question
A survey of 1,250 adults in the US was conducted to determine the quality of customer service at bank of america. Frequency Distribution of Responses
A survey of 1,250 adults in the US was conducted to determine the quality of customer service at bank of america.
Frequency Distribution of Responses Excellent 462 Pretty Good 288 Only Fair 225 Poor 225 Not Sure 50
a. What is the conservative 95% margin of error for this survey?
b. What sample size would be necessary to have a (conservative 95%) margin of error of 2 %
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An Introduction to the Mathematics of Financial Derivatives
Authors: Ali Hirsa, Salih N. Neftci
3rd edition
012384682X, 978-0123846822
