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The Average Number of Mosquitos in a Stagnant Pond Is

Question 15

Multiple Choice

The average number of mosquitos in a stagnant pond is 60 per square meter with a standard deviation of 16. If 25 square meters are chosen at random for a mosquito count, find the probability that the average of those counts is more than 62.9 mosquitos per square meter. Assume that the variable is normally distributed.


A) 0.3%
B) 18.4%
C) 31.6%
D) 81.6%

Correct Answer:

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