Answer:
mean=6+8+8+9+9+10divided 6 =
1.
Step-by-step explanation:
The mean score is (8+6+9+9+8+8)/ 6
= 48/8
= 8.
Deviations from the mean are 0 , -2, 1, 1, 0, 0
Squares of these deviations are 0, 4, 1, 1, 0, 0
So the variance = (0 + 4 + 1 + 1 + 0 + 0)/ 6 = 1
Standard deviation = √1 = 1.
The > symbol shows that you have to be older than 13, and there must be a line underneath to signify a can be equal to the number (meaning you can be 13 to do this).
19/18
substitute the value of m(11/6) in m-7/9
which is equal to 11/6 -7/9 =19/18
