It seems these days that college graduates who are employed full-time work more than -hour weeks. Data are available that can help us decide if this is true. A survey was recently sent to a group of adults selected at random. There were respondents who were college graduates employed full-time. The mean number of hours worked per week by these respondents was hours, with a standard deviation of hours. Assume that the population of hours worked per week by college graduates employed full-time is normally distributed with mean. Can we conclude that is greater than hours?

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c

~dasgupta/mathbook/append17dec2k8.pdf

hey there! : )

4y < -4

we need to isolate y. we can do this by simply dividing both sides by 4.

4y ÷ 4 > -4 ÷ 4

simplify.

y > -1

5 - y > 0

once again, we need to isolate y, so we can start off by subtracting 5 from both sides.

5 - y - 5 > 0 - 5

simplify.

-y > -5

divide both sides by -1.

** remember that when dividing any side by a negative, you must switch the sign! **

-y ÷ -1 < -5 ÷ -1

simplify.

y < 5

~hope i ! ~