Answer:
14.9
Step-by-step explanation:
Hope this helps!
Answer:
no. f-1 does not equal to f.
Step-by-step explanation:
Answer:

Step-by-step explanation:
We require more information by I will explain in principle:
If Type A has at least 300 hours and Type B at least 400 hours.

You need to determine the Probability density function of X and Y and then subtract 1 from both

This will give you the probability of the expression.