Answer:
Standard Deviation = 3.22
Variance = 10.36
Step-by-step explanation:
x P(x) x × P(x) x² x² × P(x)
19 0.20 3.8 361 72.2
10 0.20 2 100 20
11 0.30 3.3 121 36.3
12 0.20 2.4 144 28.8
13 0.10 1.3 169 16.9
____________________________________________
12.8 174.2 => Total
<em><u>Mean Formula</u></em>


<em><u>Variance Formula</u></em>

<em><u>Standard Deviation Formula</u></em>

Answer:
D
Step-by-step explanation:
You subtract the "-6" from the y, and you get +6 (which eliminates A and B). You subtract the "-2" from the x, and you get +2 (which eliminates C)
Answer:
x<24
Step-by-step explanation:
Answer:
300
Step-by-step explanation:
60 x 5 = 300