Question

QUESTION 2

1. The same as Q1: Assume the printer cartridges in average can print 12,000 pages with 800 pages as its standard deviation (µ= 12000, σ = 800), and it is a bell-shaped distribution for the number of pages (X) it can print before running of of ink.(X is a random variable, isn't it?)

   Using Emprical Rules to answer:

   What is the chance that your cartridger can print less than 12,800 pages? That means in Math: Prob(X < 12,800) or in short: P(X < 12,800) = ?

   (ex., if the answer is 6.5%, write only 0.065, ignore the % sign).

Answer 1

Answer--->>

Here z value probability calculate from standard normal distribution table.