# Business Statistics Module 4 - A discrete random vaariable...

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A discrete random vaariable can have the values x=3, x=8, or x=10, and the respective probabilitie the mean, variance, and standard deviation of x. x P(x) 3 0.2 8 0.7 10 0.1 (x) = Σ x1(P(x)) Σ S^2 = (x1-u)^2 (P(x1)) Σ 3(0.2) + 8 (0.7) +1 (3-7.2)^ (0.2) + (8-7.2) (0.7) + (10 - 7.2)^2 (0 0.6 + 5.6 +1 3.528 + 0.448 + .784 mean is 7.2 4.76 is the variance. The square root of 4.76 is 2.18, which is the

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ies are 0.2, 0.7, and 0.1. Determine (0.1) e deviation of x.
According to the National Marine Manufacurers Association, 50.0% of the population of Vermont w during the most recent year. For a randomly selected sample of 20 Vermont residents, with the dis x=the number in the sample who were boating participants that year, determine the following: (x) = n Σ = .50 π = 20 (.50) π x = 10 Σ Using the BINOMDIST formula in excel gives me the answer below. 0.25 c. P(x=10) Using the BINOMDIST formula in excel gives me the answer below. 0.18 d. P(x=12) Using the BINOMDIST formula in excel gives me the answer below. 0.12 Using the BINOMDIST formula in excel gives me the answer below. 0.06 0.94 a. (x) Σ b. P(x< 8) e. P(7< x< 13) P(x< 6) P(x< 13)

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were boating participants iscrete random variable
It has been estimated that one in five Americans surffers from allergies. The president of Hargrove select 10 students from the undergraduate population of 1400 to attend a dinner at his home. Assu

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Business Statistics Module 4 - A discrete random vaariable...

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