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Bilingual Army Officers

A survey shows that in one year, the average number of bilingual officers in an army battalion was 196.

Assume that the standard deviation is 22 and the number of bilingual officers in an army battalion is Normally distributed.

Include an appropriately labeled and shaded Normal curve for each part.

a. What percentage of battalions have between 150 and 200 bilingual officers?

b. What percentage of battalions have between 200 and 250 bilingual officers?

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