Joe picks three numbers and calls them x, x+2 and x+4. Find the difference between the largest and smallest numbers? Multiple choice.
2 , 4 , -4
Which one?

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%