Find the expected value E(X) of the following data. Round your answer to one decimal place. x
1
2
3
4
5

P(X=x)
0.1
0.2
0.3
0.2
0.2

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%