Thread: poisson distribution?

The probability of no major storm is 0.3 during each of the four months of the hurricane season. how do you find the probability that at least one major storm occurs for the fi…rst time in the third month of the season? the Poisson distribution?

Originally Posted by Intsecxtanx

The probability of no major storm is 0.3 during each of the four months of the hurricane season. how do you find the probability that at least one major storm occurs for the fi…rst time in the third month of the season? the Poisson distribution?

....

My bad, I assumed a poisson distribution, since it was in the title.

looks like a geometric to me
P(no storm month one, no storm month two, storm in month three)

=P(no storm month one)P(no storm month two)P(storm in month three)

=(.7)(.7)(.3)

u do no what happens when you assume