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3/Question#10
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Serum cholesterol concentrations are measured ...

16%π

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Serum cholesterol concentrations are measured ...

16%π

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fulminant_life
@guillo12 basically 67% fall within 1 sd. That means that 33% are +/- >1sd. So taking only those with above 296, you only look at those >1sd above the mean which is 16.5% . The other 16.5% are those >1sd below the mean.
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loko at FA 1029 p.g 162

in a uaiaGnss, 66% rae niitwh 1 SD and 95% wiitnh 2 DS

hits is ihgh ydlie af

1 SD= 68% of the population 2 SD= 95% of the population 1 SD= 99.7% of the population

They tell us the standard deviation is +/- 50 from the mean.

So women b/w ages 50-54 had a mean of 246. 1 SD= 196-296 meaning 68% of females in this range are between this range.

That means 32% are not within this range (100-68=32). They are either above OR below this range.

The question is asking how many will be above 296. So you divide 32 by 2 so that you get the percentage of only those falling above 296.

submitted by m-ice(326), 2019-06-02T17:22:04Z

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