Answer to Question #324847 in Statistics and Probability for Pikachu

Question

The mean number of hours a Filipino worker spends on the computer is 3.1 hours per workday. Assume the standard deviation is 0.5 hours and is normally distributed, how long does a worker spend on the computer if his z-score is 1.2?

Answer 1

We have a normal distribution, $\mu=3.1, \sigma=0.5,z=1.2.$

$z=\cfrac{x-\mu}{\sigma};\\ x=\mu+z\sigma=3.1+1.2\cdot0.5=3.7\text{ hours.}$