1. Let X ∼ Poisson(4).
a. Find P(X = 1)
b. P(X = 0)
c. P(X <>
d. P(X > 1)
e. µx
f. µx
2. The number of pits in a corroded steel coupon follows a Poisson distribution with a mean of 6 pits per cm2 . Let X represent the number of pits in a 1 cm2 area.
a. Find P(X = 8
b. ) P(X = 2)
c. P(X <>
d.
e. P(X> 1) µx
f. µx
3. The number of large packages delivered by a courier service follows a Poisson distribution with a rate of 5per day. Let X be the number of large packages delivered on a given day. Find
a. P(X = 6)
b. P(X ≤ 2)
c. P(5 <><>
d. µX
e. σX
4. Geologists estimate the time since the most recent cooling of a mineral by counting the number of uranium fission tracks on the surface of the mineral. A certain mineral specimen is of such an age that there should be an average of 6 tracks per cm2 of surface area. Assume the number of tracks in an area follows a Poisson distribution. Let X represent the number of tracks counted in 1 cm2 of surface area. Find
a. P(X = 7)
b. P(X ≥ 3)
c. P(2 <>< 7)=””>
d. µX
e. σX