Showing 21 to 30 of 1784 Questions

Suppose f(x) = 0.125x for 0 < x < 4. Determine the mean and variance of X.
0446 
Suppose f(x) = 1.5x2 for 1 < x < 1. Determine the mean and variance of X.
0172 
Suppose that f(x) – x/8 for 3 < x < 5. Determine the mean and variance for x.
0227 
Determine the mean and variance of the weight of packages in Exercise 4.7.
0173 
The thickness of a conductive coating in micrometers has a density function of 600x2 for 100 μm < x
0486 
Suppose that contamination particle size (in micrometers) can be modeled as for Determine the mean of X.
0231 
Integration by parts is required. The probability density function for the diameter of a drilled hole in millimeters is for mm. Although the target diameter is 5 millimeters, vibrations, tool wear, and other nuisances produce diameters larger than 5 millimeters.(a) Determine the mean and variance of the diameter of the holes.(b) Determine
4543 
Suppose the probability density function of the length of computer cables is f (x) = 0.1 from 1200 to 1210 millimeters.(a) Determine the mean and standard deviation of the cable length.(b) If the length specifications are 1195 < x < 1205 millimeters, what proportion of cables are within specifications?
2391 
Suppose X has a continuous uniform distribution over the interval [1.5, 5.5].(a) Determine the mean, variance, and standard deviation of X.(b) What is P(X < 2.5)?
00 
Suppose X has a continuous uniform distribution over the interval [1, 1]. (a) Determine the mean, variance, and standard deviation of X.(b) Determine the value for x such that P(x < X < x) = 0.90.
0486