The number of traffic accidents at a certain intersection is thought to be well modeled by a Poisson process with a mean of 3 accidents per year. a. Find the mean waiting time between accidents.
b. Find the standard deviation of the waiting times between accidents.
c. Find the probability that more than one year elapses between accidents.
d. Find the probability that less than one month elapses between accidents.
e. If no accidents have occurred within the last six months, what is the probability that an accident will occur within the next year?

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

pi x^2

step-by-step explanation:

pi times x squared

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!

step-by-step explanation:

graph using a few selected

x         y

-1       15

0         6

1         2.4

2       0.96