B} The average number of mosquitoes in a stagnant pond is 70 per square meter with a standard deviation of 8. If 36 square meters are chosen at random for a mosquito count, find the probability that the average of those counts is more than 70.9 mosquitoes per square meter. Assume that the variable is normally distributed. Show answer in decimal form.
I came up with the answer 54.4 .... But I am not sure how I got it and I have to show my work ?
Please someone help me
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