Answer (Choose 1 answer)
Let 20.025 1.96.
A An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is known to be $1000. A random sample of 50 individuals resulted in an average income of $15000. What total sample size would the economist need to use for a 95% confidence interval if the width of the interval should not be more than $100?BDE
A. n = 40
B. None of the other choices is correct
C. n = 385
D. n = 1537
E. n = 20
ORi
