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.A 91% confidence interval for the mean salary of computer scientists would be _____.
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]
Correct Answer:

Verified
Correct Answer:
Verified
Q105: You want to estimate the proportion of
Q106: We want to estimate with 99 percent
Q107: A machine has been designed to make
Q108: Provide a one-sentence interpretation of the 95%
Q109: Consider a normally distributed population with
Q111: In 2007,13,000 internet users were surveyed and
Q112: What sample size is needed to obtain
Q113: Let p<sub>1</sub> represent the population proportion of
Q114: The 99% confidence interval for the average
Q115: An insurance analyst working for a car