Brain weights In a population of 500 adult Swedish males, medical researchers find their brain weights to be approximately normally distributed with mean u = 1400 gm and standard de- viation o = 100 gm. a. What percentage of brain weights are between 1325 and 1450 gm? b. How many males in the population would you expect to have a brain weight exceeding 1480 gm?

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Brain weights In a population of 500 adult Swedish males,
medical researchers find their brain weights to be approximately
normally distributed with mean u = 1400 gm and standard de-
viation o = 100 gm.
a. What percentage of brain weights are between 1325 and
1450 gm?
b. How many males in the population would you expect to have
a brain weight exceeding 1480 gm?
Transcribed Image Text:Brain weights In a population of 500 adult Swedish males, medical researchers find their brain weights to be approximately normally distributed with mean u = 1400 gm and standard de- viation o = 100 gm. a. What percentage of brain weights are between 1325 and 1450 gm? b. How many males in the population would you expect to have a brain weight exceeding 1480 gm?
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