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Annabeans1105
27.06.2020 •
Mathematics
The length of time spent waiting in line at a certain bank is modeled by an exponential density function with a mean of 5 minutes. Find the probability that you would wait in line for at least 8 minutes in this bank.
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Ответ:
And for this case we can use the complement rule and we got:
And we can use also the cumulative distribution function given by:
And replacing we got:
Step-by-step explanation:
For this case we can define the random variable of interest X as "The length of time spent waiting in line at a certain bank" and for this case we know that the distribution for X is given by:
And for this case we want to find the following probability:
And for this case we can use the complement rule and we got:
And we can use also the cumulative distribution function given by:
And replacing we got:
Ответ: