Which describes the expected value:
the sum over all outcomes of the value of the outcome times the probability of the outcome
the level of confidence that a sample mean accurately represents a population mean
the population mean
the interval around the sample mean that you expect to contain the population mean

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80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

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only 10/60 isn't equivalent

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