Mathematics, 02.03.2020 17:45, Ben2752
Suppose that the probability density function ofthe length of computer cables is f (x) = 0.1 from 1200 to1210 millimeters. a. Determine the mean and standard deviation of the cablelength. b. If the length specifications are 1195 < x < 1205 millimeters, what proportion of cables is within specifications?
Answers: 3
for 
implies that 
elsewhere, since
is a random variable representing cable lengths according to the PDF 
.![E[X]=\displaystyle\int_{-\infty}^\infty x\,f(x)\,\mathrm dx=0.1\int_{1200}^{1210}x\,\mathrm dx=1205](/tpl/images/0530/2398/3e397.png)
![\operatorname{Var}[X]=E[(X-E[X])^2]=E[X^2]-E[X]^2](/tpl/images/0530/2398/a989f.png)
![E[X^2]=\displaystyle\int_{-\infty}^\infty x^2\,f(x)\,\mathrm dx=0.1\int_{1200}^{1210}x^2\,\mathrm dx=\frac{4,356,100}3](/tpl/images/0530/2398/f6644.png)
, making the standard deviation 
.
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 20:50, autumnxng3094
A. what is the area of the base? use complete sentences to explain your reasoning. b. what is the volume of the prism? use complete sentences to explain your reasoning.
Answers: 1
Mathematics, 21.06.2019 21:30, billydeck30
Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is Ο cubic inches.
Answers: 1
Mathematics, 22.06.2019 00:00, jhenifelix
Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.
Answers: 1
Do you know the correct answer?
Suppose that the probability density function ofthe length of computer cables is f (x) = 0.1 from 12...
Questions in other subjects:
Chemistry, 15.12.2020 02:50
Mathematics, 15.12.2020 02:50
Health, 15.12.2020 02:50
Mathematics, 15.12.2020 02:50
English, 15.12.2020 02:50
Arts, 15.12.2020 02:50
