[1] The probability density function of a random variable X is SC(x + 4), -4 < x < 4 0, fx(x) = otherwise Find the mean ofX when X²>4.
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
![[1] The probability density function of a random variable X is
SC(x + 4), -4 < x < 4
0,
fx(x) =
otherwise
Find the mean ofX when X²>4.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd23c6712-4bfd-49ab-afb1-b01a2032704c%2Ff81afdb2-ef2d-4365-aeb9-98c1552bbed4%2Fy9du7cd.png&w=3840&q=75)
Note:
Hey there! Thank you for the question. As you have posted several different questions together, according to our policy, we have solved the first one for you. If you need help with the others, please re-post them separately.
Introduction:
For a continuous random variable X, the probability distribution function (pdf) must satisfy the following condition:
Step by step
Solved in 3 steps with 5 images
