Answer:
ur pfp... pls get help NOWWW
Step-by-step explanation:
pls stop this madness
The exponential distribution is:

where

The probability we want is how likely will a dvd player last more than 8 years, given it has already lasted 5 years
To find this, you use conditional probability.

where A is P(x>8) and B is P(x>5)
To find these probabilities, integrate over the distribution:

Sub into conditional probability formula:

Final Answer: Given a dvd player is more than 5 years old, the probability that it will last another 3 more years is about 54.9%
115 degrees as 70+40=115 and that is equal to ?
Answer/Step-by-step explanation:
From the middle go left, stop between -4 and -5, then go up and stop between 2 and 3,