Answer:
Step-by-step explanation:
Answer:
=> 1/4 * 
=> 1/4 * 3.14 * 4
=> 3.14
Answer = 3.14
<h2>
Please mark my answer as the brainliest for further answers :)</h2>
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%
Answer:
56
Step-by-step explanation: