The actual tracking weight of a stereo cartridge that is set to track
at 3 gm on a particular changer can be regarded as a continuous random
variable X with probability density function
f(x)= k[1-(x-3)^2] , 2≦X≦4
0 , otherwise
(a)找出k值
(b)what is the probability that the actual tracking weight
is greater than the prescribed weight?
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 210.85.114.238