In a competition of 50 professional ballroom dancers, 22 compete in the fox-trot competition, 18 compete in the tango competitio
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Answer:
61,239,550
Step-by-step explanation:
We let the random variable X denote the IQ scores. This would imply that X is normal with a mean of 100 and standard deviation of 17. We proceed to determine the probability that an individual chosen at random from the population would be a genius, that is;
Pr( X>140)
The next step is to evaluate the z-score associated with the IQ score of 140 by standardizing the random variable X;
The area to the right of 2.3529 will be the required probability. This area from the standard normal tables is 0.009314
From a population of 6,575,000,000 the number of geniuses would be;
6,575,000,000*0.009314 = 61,239,550
The answer is B. 2y+3
this is proven by multiplying the divisor of the original question and the solution
this is proven by multiplying the divisor of the original question and the solution