Ask your own question, for FREE!
Mathematics 11 Online
OpenStudy (anonymous):

WHAT IS THIS QUESTION ASKING FOR?? the marks obtained by students of a class in a test are normally distributed with a mean of 60 marks and a standard deviation of 5 marks. about what percent of students have scored between 60 and 65 marks? a. 13.5 b. 34 c. 50 d. 95

OpenStudy (anonymous):

For a normal distribution there are simple approximations for what fraction of the values lie between the mean and 1 or 2 or 3 std dev.

OpenStudy (anonymous):

http://rchsbowman.wordpress.com/2009/11/29/statistics-notes- –-properties-of-normal-distribution-2/

OpenStudy (anonymous):

OpenStudy (anonymous):

is there a formula that i use?

OpenStudy (anonymous):

The question asks, what fraction lies between mu and 1 sd above mu.

OpenStudy (anonymous):

okay..thanks for your help!

OpenStudy (anonymous):

answer in simple words without using that much technical jargon is 13.5

OpenStudy (anonymous):

"jargon" is in the figure

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!