Julie knows that the adult population gets, on average, eight hours of sleep each night. A hypothesis test can help her see if c
1 answer:
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Answer:
Step-by-step explanation:
Given
Required
The difference quotient for h
The difference quotient is calculated as:
Calculate f(x + h)
The numerator of is:
Collect like terms
So, we have:
Rewrite as:
Answer:
The probability density function for the average length of life of the two components is
Step-by-step explanation:
Exponential distribution:
The exponential probability distribution, with mean m, is described by the following probability density:
In which is the decay parameter.
Each missile has a length of life governed by the exponential distribution with mean 1 (with measurements in hundreds of hours). Find the probability density function for the average length of life of the two components.
2, each with mean 1 means that
So the probability density function is: