Answer: The percent of US adults spend above 29 hours per month on PC internet = 50%
Step-by-step explanation:
Given: , US adults spent on average 29 hours per month using the PC internet.
As the me spent on the PC internet follows a normal distribution.
And there is 50% of the population lies above the mean and below the mean.
Then, the percent of US adults spend above 29 hours per month on PC internet = 50%