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GMAT prep 4
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saurabhmahajan
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HELP!!!!
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Thanks and regards,
Saurabh Mahajan
I can understand you not winning,but i will not forgive you for not trying.
Saurabh Mahajan
I can understand you not winning,but i will not forgive you for not trying.
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selango
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Mean=8.1 ounces
SD=0.3 ounce
within 1.5 SD of the mean (ie)
1.5 SD =1.5*0.3=0.45
within 1.5 SD of the means (ie) values bw mean-0.45 and mean+0.45
bw 7.65 and 8.55
Only 7.51 is not in this range.
So 11 values
SD=0.3 ounce
within 1.5 SD of the mean (ie)
1.5 SD =1.5*0.3=0.45
within 1.5 SD of the means (ie) values bw mean-0.45 and mean+0.45
bw 7.65 and 8.55
Only 7.51 is not in this range.
So 11 values
--Anand--
I agree with selango's explanation and answer. I just wanted to caution you to read the question carefully. I came across one question that asked for 1 SD below the mean/ negative SD. I did not read carefully and arrived at the wrong answer.
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Gurpinder
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You can't have a negative SD.sdotcruz wrote:I agree with selango's explanation and answer. I just wanted to caution you to read the question carefully. I came across one question that asked for 1 SD below the mean/ negative SD. I did not read carefully and arrived at the wrong answer.
"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
- Alfred A. Montapert, Philosopher.
