He will finish at 6:50. It will take him 5 hours and 50 minutes. Hope this helps!
Aye Sir!
I like to use 8 hours of school a day so thats 21 a week but all people are different so at most 36 hours a week
Solution: We are given:

Using the empirical rule, we have:
covers 68% of data.
Also the percentage of values below mean = Percentage of values above mean = 50%
Now, let's find the z score for x=20

Therefore, the percentage of values greater than 1 standard deviation above mean 
Expected number of students = 16% of 100 = 16
Answer:
uhhh
Step-by-step explanation:
uh I don't see the graph