Let x = the time between two successive arrivals at the drive-up window of a local bank. if x has an exponential distribution with λ = 1, (which is identical to a standard gamma distribution with α = 1), compute the following. (if necessary, round your answer to three decimal places.)

(a) the expected time between two successive arrivals 1
(b) the standard deviation of the time between successive arrivals 1
(c) p(x ≤ 2) 0.865 (d) p(3 ≤ x ≤ 5) .043

the answer is d

step-by-step explanation:

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

0.038

step-by-step explanation: