How do I calculate the answer, please be very detailed, Thank You.
asked Sep 27, 2015 in Statistics Answers by Melissa

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:

To avoid this verification in future, please log in or register.

1 Answer

Definition of standard error=(standard deviation)/sqrt(sample size)

=25/sqrt(50)=25/5sqrt(2)=5/sqrt(2) or 5sqrt(2)/2=3.5355 approx. This is the deviation of the sample mean from the population mean of 120.

Relative standard error=5sqrt(2)/240=2.95% (standard error/mean expressed as a percentage).

answered Sep 27, 2015 by Rod Top Rated User (441,800 points)
Welcome to, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
78,517 questions
82,356 answers
63,283 users