4 points) Suppose that the time (in hours) required to repair a machine is an exponentially distributed random variable with parameter λ=0.3. What is (a) the probability that a repair time exceeds 6 hours?
(b) the conditional probability that a repair takes at least 13 hours, given that it takes more than 8 hours?

$75.00

step-by-step explanation:

i = prt

i = 1,5000 * 0.025 * 2

i = 75

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true