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05 May 2019, 23:28
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C
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Difficulty:
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Question Stats:
78% (00:37) correct
22%
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If the mean of a set of data is 27 and the standard deviation is 6, which of the following contains the interval two standard deviations from the mean?
A. 9 to 15
B. 9 to 21
C. 15 to 39
D. 21 to 33
E. 27 to 37
A. 9 to 15
B. 9 to 21
C. 15 to 39
D. 21 to 33
E. 27 to 37
06 May 2019, 00:25
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The mean =27
2 standard deviation = 12
The least value will be 27-12=15
The greatest value will be 27+12=39
IMO
Ans: C
2 standard deviation = 12
The least value will be 27-12=15
The greatest value will be 27+12=39
IMO
Ans: C
