Find the mean-variance and standard deviation
The following data lists the average monthly snowfall for January in 15 cities around the US:
26 6 5 45 44 10 39 33
15 33 11 36 36 4 32
Find the mean, variance, and standard deviation. Please show all of your work
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Explain how you would go about finding the number of "chalk molecules "it takes to write your name on the board?
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Suppose that mean SAT score in Mathematics for 11th graders across nation is 500, and that the standard deviation is 100 points. Find out the probability that mean SAT score for the randomly selected group of 150 11th graders is between 508 and 492
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Determine present value of the ordinary annuity of 60 payments of $5100 each made quarterly and earning interest at 8%/year compounded quarterly.
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