The failure time of an electronic component is represented by random variable x, which is continuous and exponentially distributed with mean 8 years. find the probability density function (pdf) x. derive the probability (cumulative) distribution function of x and use it to find pr(2yrs ≤ x ≤ 4yrs).

a precentage of 6th graders. the population is all 6th graders. let me know if i'm wrong, i hope this ! : )

step-by-step explanation:

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.