In a Random Sample of 651 Computer Scientists Who Subscribed

Multiple Choice

In a random sample of 651 computer scientists who subscribed to a web-based daily news update,it was found that the average salary was $46,816 with a standard deviation of $12,557.Calculate a 91% confidence interval for the mean salary of computer scientists.

A) [$25,469 $68,163]
B) [$46,592 $47,040]
C) [$46,157 $47,475]
D) [$46,783 $46,849]
E) [$45,979 $47,653]