X is normally distributed with mean μ= 5.2 and standard deviation σ= 1.4.
A. Find the z-score corresponding to X= 7.3.
B. Compute P(X≤7.3)
C. Compute P(X>7.3)
X is normally distributed with mean μ= 5.2 and standard deviation σ= 1.4. A. Find the...
X is a normally distributed variable with mean μ = 30 and standard deviation σ = 4. Find P(x < 40)?
1. X is a normally distributed variable with mean μ = 30 and standard deviation σ = 4. Draw a graph and Find: a) P(x < 40) b) P(x > 21) c) P(30 < x < 35)
Let X be normally distributed with mean μ = 3,200 and standard deviation σ = 1,600. [Use Excel commands instead of 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.) c. Find x such that P(3,200 ≤ X ≤ x) = 0.1217. (Round "z" value to 2 decimal places, and final answer to nearest whole number.)
etX be normally distributed with mean μ = 120 and standard deviation σ = 20. (a) Find z such that P(X > z) = 0.90. (b) Find z such that P(80 S X 100).
Assume the random variable X is normally distributed with mean μ=50 and standard deviation σ=7. Compute the probability. Be sure to draw a normal curve with the area corresponding to the probability shaded. P(X>38)=________ (Round to four decimal places as needed.)
Assume the random variable x is normally distributed with mean μ=50 and standard deviation σ=7. Find the indicated probability. P(x>34)
Assume the random variable x is normally distributed with mean μ=50 and standard deviation σ=7. Find the indicated probability. P (x>38)
Let X be normally distributed with mean μ = 13 and standard deviation σ = 4. a. Find P(X ≤ 2). (Round "z" value to 2 decimal places and final answer to 4 decimal places.) b. Find P(X > 4). (Round "z" value to 2 decimal places and final answer to 4 decimal places.) c. Find P(7 ≤ X ≤ 12). (Round "z" value to 2 decimal places and final answer to 4 decimal places.) d. Find P(10 ≤ X...
Let X be normally distributed with mean μ = 137 and standard deviation σ = 20. [You may find it useful to reference the z table.] a. Find P(X ≤ 100). (Round "z" value to 2 decimal places and final answer to 4 decimal places.) b. Find P(95 ≤ X ≤ 110). (Round "z" value to 2 decimal places and final answer to 4 decimal places.) c. Find x such that P(X ≤ x) = 0.340. (Round "z" value and...
Assume the random variable x is normally distributed with mean μ=88 and standard deviation σ=4. Find the indicated probability. P(78<x<82)