Answer:
its the first graph
Step-by-step explanation:
just did it
Answer:
9/4, 3/2, 1, 7/8, 5/8
Step-by-step explanation:
Answer 16
Step-by-step explanation:
Answer:

And using the cumulative distribution function we got:

The probability that preparation is within 2 minutes of the mean time is 0.134
Step-by-step explanation:
For this case we define the following random variable X= (minutes) for a lab assistant to prepare the equipment for a certain experiment , and the distribution for X is given by:

The cumulative distribution function is given by:

The expected value is given by:

And we want to find the following probability:

And we can find this probability on this way:

And using the cumulative distribution function we got:

The probability that preparation is within 2 minutes of the mean time is 0.134
I'm guessing its 900 because 3 × 12 = 36
36 × 25 = 900