Author Question: For a certain type of fabric, the average number of defects in each square foot of fabric is 0.9. ... (Read 137 times)

ss2343 · **on:** Aug 1, 2018

For a certain type of fabric, the average number of defects in each square foot of fabric is 0.9. Find the probability that a randomly selected square foot of the fabric will contain more than one defect.

A) 0.1647 B) 0.7725 C) 0.2275 D) 0.6341

Question 2

The number of lightning strikes in a year at the top of a particular mountain has a Poisson distribution with a mean of 3.1. Find the probability that in a randomly selected year, the number of lightning strikes is 5.

A) 0.0026 B) 0.1397 C) 0.1827 D) 0.1075