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15 votes
15 votes
There are about 11,000 birth each day in United States and the proportion of the boys born in United States is 0.152 assume that each day 100 birth randomly selected the portion of boys record



User ThinkGeek
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1 Answer

14 votes
14 votes

Answer:

15 boys selected

Explanation:

Given


image --- The population


image --- The sample selected


image -- The proportion of boys

Required

The expected number of boys selected

The expected number is calculated by multiplying the sample size by the proportion of boys.

So, we have:


image


image


image


image --- approximated

User Doron Aviguy
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