BUS277
Exam Review
Ch. 3, 4 and 5
In October 2012, Apple introduced a much smaller variant of the Apple iPad, known as the iPad Mini. Weighing less than 11 ounces, it was about 50% lighter than the standard iPad. Battery tests for the iPad Mini showed a mean life of 10.25 hours (The Wall Street Journal, October 31, 2012). Assume that battery life of the iPad Mini is uniformly distributed between 8.5 and 12 hours.a)Give a mathematical expression for the probability density function of battery life.
a
b)What is the probability that the battery life for an iPad Mini will be 10 hours or less (to 4 decimals)?
c)What is the probability that the battery life for an iPad Mini will be at least 11 hours (to 4 decimals)?
d)What is the probability that the battery life for an iPad Mini will be between 9.5 and 11.5 hours (to 4 decimals)?