Mean-variance and standard deviation
The following data lists the average monthly snowfall for January in 15 cities around the US:
20 13 15 28 16 25 2 14
35 42 5 34 34 38 29
Find the mean, variance, and standard deviation. Please show all of your work.
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Received contribution of $20,000 from each of the two principal owners of the new business in exchange for shares and stock.
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Flaws in a certain type of drapery material appear on the average of three in 250 square feet. If we assume the Poisson distribution, find the probability of at most one flaw in 450 Square feet.
SAT scores (out of 2400) are distributed normally with a mean of 1500 and a standard deviation of 300. Suppose a school council awards a certificate of excellence to all students who score at least 1900 on the SAT, and suppose we pick one of the r
Develop a joint probability table with three rows (airlines) and two columns (on-time arrivals vs. late arrivals). What is the probability that Flight 1424 will arrive on time?
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Amy Monroe wants to create a fund today that will enable her to withdraw $27,480 per year for 8 years, with the first withdrawal to take place 5 years from today.
On average, a certain number, k, of National Express coaches go to Bournemouth every day. It is found that the probability of n coaches going to Bournemouth in a day is e -k What is n?
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