An Economist Is Interested in Studying the Incomes of Consumers

Multiple Choice

An economist is interested in studying the incomes of consumers in a particular region.The population standard deviation is known to be $2,000.A random sample of 50 individuals resulted in an average income of $30,000.
-What is the upper end point in a 99% confidence interval for the average income?

A) $30,282
B) $30,1042
C) $30,728
D) $30,660