Misha wants to spend some time playing guitar in uses the computer before dinner dinner will be ready in 45 minutes or less he w
ants to spend at least 15 minutes playing guitar which graph represents the amount of time Misha can spend playing guitar and use the computer
2 answers:
Answer:
<h2>Graph B.</h2>Step-by-step explanation:
Choices are attached.
According to the problem, the total time restriction is 45 minutes, because dinner will be ready in 45 minutes or less, this means that the area of solution must be under 45.
Addiotionally, he want to play guitar for at least 15 minutes, this means that the area of solution values more than x = 15.
If we apply these restriction, we would find the the solution is graph B, because the shaded area is under the 45-line and after the vertical line which expresses guitar time.
Therefore, the right answer is B.
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Answer:
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Step-by-step explanation:
Let X be the random variable that measures the time that a switch will survive.
If X has an exponential distribution with an average life β=44, then the probability that a switch will survive less than n years is given by
So, the probability that a switch fails in the first year is
Now we have 100 of these switches installed in different systems, and let Y be the random variable that measures the the probability that exactly k switches will fail in the first year.
Y can be modeled with a binomial distribution where the probability of “success” (failure of a switch) equals 0.0225 and
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equals combinations of 100 taken k at a time.
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