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Updated on: 19 Feb 2012, 22:25
Originally posted by anilnandyala on 02 Nov 2010, 05:32.
Last edited by Bunuel on 19 Feb 2012, 22:25, edited 1 time in total.
Last edited by Bunuel on 19 Feb 2012, 22:25, edited 1 time in total.
Edited the question
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A
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Arithmetic mean and standard deviation of a certain normal distribution are 13.5 and 1.5. What value is exactly 2 standard deviations less than the mean?
(A) 10.5
(B) 11
(C) 11.5
(D) 12
(E) 12.5
(A) 10.5
(B) 11
(C) 11.5
(D) 12
(E) 12.5
02 Nov 2010, 05:49
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Original question is:
Arithmetic mean and standard deviation of a certain normal distribution are 13.5 and 1.5. What value is exactly 2 standard deviations less than the mean?
(A) 10.5
(B) 11
(C) 11.5
(D) 12
(E) 12.5
The value which is exactly two SD below the mean is: mean-2*SD=13.5-2*1.5=10.5.
Answer: A.
Arithmetic mean and standard deviation of a certain normal distribution are 13.5 and 1.5. What value is exactly 2 standard deviations less than the mean?
(A) 10.5
(B) 11
(C) 11.5
(D) 12
(E) 12.5
The value which is exactly two SD below the mean is: mean-2*SD=13.5-2*1.5=10.5.
Answer: A.
