<span>The exponent of a number says how many times to use the number in a multiplication.</span><span>In 82 the "2" says to use 8 twice in a multiplication,
so 82 = 8 × 8 = 64
</span><span>In words: 82 could be called "8 to the power 2" or "8 to the second power", or simply "8 squared"</span>
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:
hmm
Step-by-step explanation:
Answer:
mean: 8.4 median: 7 mode: 6
Step-by-step explanation:
mean add all the numbers up and divide them by how many of them there are.
median put them in order smallest to largest then find the middle number
mode the number that comes up in the line the most