Find the mean of the distribution shown below.
X
-4
-2
0
2
P(X)
0.44
0.24
0.23
0.09

           

Explanation:

1. Write the probability table

X            P(X)

-4            0.44

-2            0.24

0            0.23

2            0.09

2. Check that the column of P(X) add up 1

0.44 + 0.24 + 0.23 + 0.09 = 1.00

3. Use the formula

         

4. Substiture and compute

         

Iwas in a argument about a certain class grade with my teacher. it was a ‘a-’when i felt that i deserved a ‘a’. i showed him (my teacher) why i felt i derserved so. i questioned what i got wrong and showed him what i learned. i look back to that teacher with nothing but love and support because that’s the class that i actually learned the most. the moral of the story is to see where the other person is coming from and what they have done. also, when in a conflict, never attack the persons character. this will just make the argument end poorly.