The S&P TSX Composite index delivered annual returns of 10.55%,-8.32%,21.08% and 9.10% from 2014 to 2017.What is a 95% confidence interval for the 2014 return?
A)4.20% to 11.47%
B)7.27% to 11.47%
C)-4.08% to 20.28%
D)-2.67% to 17.21%
E)6.91% to 7.63%

Question

Quizplus · Accepted Answer

The 95% confidence interval for the 2014 return is calculated using the given returns and their standard deviation. The interval that includes the 2014 return of 10.55% is -4.08% to 20.28%.

The S&P TSX Composite Index Delivered Annual Returns of 10