00:01
Well, given that there were 93 of quakes measuring 6 or more on the richter scale in the last 100 years.
00:08
I'm going to let x be the number of quicks measuring 6 or more on the richter scale in a given year.
00:14
Now, we need to find the average number of quicks measuring 6 or more on the richter scale.
00:38
So this average is going to be equals to 93 out of 100.
00:45
Which is 0 .93.
00:48
Now we know that x actually will follow a poison distribution.
00:52
Now this is the average number in a year, yeah, because we divided by the number of years here.
00:58
So this is per year.
01:01
So we know the x follow a poison distribution of 0 .93 and that probability of x equals to r will be 0 .93 to power r over r factorial e to power minus 0 .93.
01:16
So that's the probability of the poisson distribution formula.
01:19
So now we want to find probability of having at least two earthquake in the same year that measures six or more on the rector scale...