Suppose x is a random variable best described by a uniform probability distribution with c = 10 and d = 70. Find P(x < 25).

If you're talking about a discrete distribution, then

(1/61 because there are 61 numbers in the range of integers from 10 to 70) so that

If the distribution is continuous, we would have the same density function, but x can be any real number in the interval [10, 70]. So we have

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

there is no question content here, but you for the free points! : d