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marysya [2.9K]
3 years ago
3

Some psychologists believe that a "genius" should be defined as anyone having an IQ over 140. If IQ scores are normally distribu

ted with a mean of 100 and a standard deviation of 13, and if the population of the world is 6,575,000,000, how many geniuses are there in the world today? A. 115,000 B. 24,985,000 C. 536,000,000 D. 123,000 E. 6,575,000
Mathematics
1 answer:
Zinaida [17]3 years ago
5 0
I'm positive it's B. 24,985,000
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Answer:

The required probability is approximately 0.3467.

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Let X represents the event of making an online purchase,

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Hence, by the binomial distribution formula,

P(x) = ^nC_x p^x q^{n-x}

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P(x ≤ 3) =P(x=0) + P(X=1) + P(X=2) + P(x=3)

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Elijah spends $15 on 3 t-shirts How much is 1 shirt
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Answer:

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Step-by-step explanation:

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ira [324]

The park charges 1.50 per ride.

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Answer:

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