00:01
Hello students, here in the given problem, to first find out the probability of observing at most two cars i .e.
00:06
Probability of x is less than or equal to 2, arriving at the lanes during the 15 -minute interval.
00:13
By using the poisson distribution, here probability of x is equal to k e raised to minus lambda lambda raised to k upon k factorial.
00:23
So, find the probability of x is less than or equal to 2 is equal to e raised to minus lambda is 5 and here the taking the e raised to minus 5 is common.
00:36
So, lambda raised to k that is 5 raised to 0 upon 0 factorial plus 5 raised to 1 upon 1 factorial plus 5 raised to 2 upon 2 factorial.
00:48
So, this value is e raised to minus 5 1 plus 5 plus 25 by 2.
00:56
So, this value is 0 .1246.
01:01
Probability of x is less than or equal to 2.
01:04
Now, the second one to find the probability that the inter arrival time of car is less than 1 minute.
01:10
So, by using the exponential distribution for the probability of x is less than or equal to x 1 minus e raised to minus lambda x.
01:19
Now, the lambda is given 5 by 50.
01:23
So, this value is 1 by 3 and x is 1.
01:28
Therefore, the probability of x is less than 1 is equal to 1 minus e raised to lambda is 1 by 3 into 1.
01:37
So, this value is 1 minus 0 .7165...