MATH 1127 Lecture 4: MATH 1127 - INTRODUCTION to STATISTICS
Document Summary
A homeowner finds that there is a 0. 15 probability that a flashlight does not work when turned on. If she has three flashlights, find the probability that at least one of them works when there is a power failure. Find the probability that the second flashlight works given that the first flashlight works: the probability of the homeowner finding a flashlight that works out of the three available will be 0. 996625. Given the first flashlight works, the probability of the second flashlight working is 0. 85. Central limit theorem: assume that sat scores are normally distributed with mean mu equals 1518 and standard deviation sigma equals 325. The standard deviation of green candies out of 100 randomly selected as well would be 3. 47: you are given a random sample of 100 m&ms, including 8 that are green. It is not unusually high because eight would have had to be two standard deviations either above or below to be considered unusual.
