A device has two components both of which have lifetimes that are exponentially distributed with mean 4. The lifetimes of the components are independent. The device fails when both components have failed. Let T represent the lifetime of the device. Compute P(T>2).

understand that i don't know the answers

will someone answer his question

the answer is a

step-by-step explanation:

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

the answer is: -22 also a

hope i

-lavira: )