miguearrobita
12.08.2019 •
Mathematics
My bus is scheduled to depart at noon. however, in reality, the departure time varies randomly, with expected departure times 12 o'clock noon and a standard deviation of 6 minutes. assume the departure time is normally distributed. if i get to the bus stop 5 minutes past noon, what is the probability that the bus has not yet departed?
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Ответ:
0.2033
Step-by-step explanation:
Given : The departure time varies randomly, with expected departure times 12 o'clock noon and a standard deviation of 6 minutes.
Let
Let x be the random variable that represents the departure time .
We assume the departure time is normally distributed.
The formula to find the z-score :-
For x= 5 , we have
Now, the probability that the bus has not yet departed :-
Hence, the probability that the bus has not yet departed = 0.2033
Ответ:
Step-by-step explanation:
A={1,3,5,7,9,...}