00:01
For this question, we have a rebel which is parcel, and the rate parameter is 8 times t.
00:12
So t is the number of hours, so the time in terms of hours, and 8 is the rate here.
00:22
So for part a, now 1 hour period, t is equal to 1.
00:27
So we have a personal distribution with the main being 8 here.
00:31
We want to find the probability that x is equal to 6.
00:35
We know this is equal to e to the negative lambda, which is 8, and then 8 to the power of 6 over 6 factorial, and then this is equal to 0 .1 to 1 to 2 1 here, if we keep 4 decimal places.
00:53
And then p at least 6 is equal to 1 minus p x smaller than 6, and then this is equal to, so we just we just need to sum up the probability for x being 012, 3, 4, and 5.
01:06
And then this is equal to 0 .808, then p at least 10, y minus p that x small than 10.
01:18
So we just need to calculate the probability for x being 0 ,1, 2, 6, and 2, 9...