4. A box contains 5 balls. Two are numbered 1, one is numbered 2, and two are numbered 3. The balls are mixed and one is selected at random. After a ball is selected, its number is recorded. Then it is replaced. If the experiment is repeated many times, find the mean, variance, and standard deviation of the numbers on the balls. a. μ = 4; σ2 = 0.6; σ ≈ 0.78 b. μ = 3; σ2 = 0.7; σ ≈ 0.84 c. None of the Choices d. μ = 1; σ2 = 0.9; σ ≈ 0.95 e. μ = 2; σ2 = 0.8; σ ≈ 0.89
4. A box contains 5 balls. Two are numbered 1, one is numbered 2, and two are numbered 3. The balls are mixed and one is selected at random. After a ball is selected, its number is recorded. Then it is replaced. If the experiment is repeated many times, find the mean, variance, and standard deviation of the numbers on the balls. a. μ = 4; σ2 = 0.6; σ ≈ 0.78 b. μ = 3; σ2 = 0.7; σ ≈ 0.84 c. None of the Choices d. μ = 1; σ2 = 0.9; σ ≈ 0.95 e. μ = 2; σ2 = 0.8; σ ≈ 0.89
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.3: Special Probability Density Functions
Problem 53E
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4. A box contains 5 balls. Two are numbered 1, one is numbered 2, and two are numbered 3. The balls are mixed and one is selected at random. After a ball is selected, its number is recorded. Then it is replaced. If the experiment is repeated many times, find the
a. μ = 4; σ2 = 0.6; σ ≈ 0.78
b. μ = 3; σ2 = 0.7; σ ≈ 0.84
c. None of the Choices
d. μ = 1; σ2 = 0.9; σ ≈ 0.95
e. μ = 2; σ2 = 0.8; σ ≈ 0.89
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