Question

Let X be normally distributed with mean μ = 3,400 and standard deviation σ = 2,200....

Let X be normally distributed with mean μ = 3,400 and standard deviation σ = 2,200. [You may find it useful to reference the z table.]


a. Find x such that P(X ≤ x) = 0.9382. (Round "z" value to 2 decimal places, and final answer to nearest whole number.)



b. Find x such that P(X > x) = 0.025. (Round "z" value to 2 decimal places, and final answer to nearest whole number.)



c. Find x such that P(3,400 ≤ X ≤ x) = 0.1217. (Round "z" value to 2 decimal places, and final answer to nearest whole number.)



d. Find x such that P(X ≤ x) = 0.4840. (Round "z" value to 2 decimal places, and final answer to nearest whole number.)

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