A z-score<span> is the number of standard deviations from the mean a data point is.
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Standard deviation explains by how much the members of a group differ from the mean value for the group.
Using the z-score formula:
z = ( x - μ ) ÷ σ
Where;
x = score
μ = Mean
σ = Standard deviation
Z- Score (Tara) = ( 52 - 64 ) ÷ 8
= - 12 ÷ 8
= - 1.5
Z- Score (Jamal) = ( 82 - 64 ) ÷ 8
= 18 ÷ 8
= 2.25
Z- Score (Samuel) = ( 66 - 64 ) ÷ 8
= 2 ÷ 8
= 0.25
7 is 8.16
8 is 1516
9 is 19.625
10 is 18.84
and bonus is zero
Answer:
4
Step-by-step explanation:
12 a3b5 / 3a5b-2
= (12/3) x (a3 / a5) x (b5/b-2) = 4
I hope im right!!
Try to find the area of this cylinder and with that you shall get the answer.... Do you need steps?
