Reference no: EM132643207

The mean number of hours American workers spend on the computer is 3.1 hours per workday. Assume that the standard deviation is 0.5 hour and that the variable is normally distributed.

1)a) Clearly, with detail, and using appropriate notation, label the distribution of hours that American workers spend on the computer per weekday.

B)What percent of American workers spend between two to two and a half hours on the computer?

C)What is the probability that a random worker spends 3.8 hours or less on the computer?

D)How long does an American worker spend on a computer if his/her time is in the lowest 25 percent?

E)What proportion of American workers spend more than 5 hours on the computer?

F)What is the z-score for a time of 141 minutes?