Answer:
(2,0) (-6,0)
Step-by-step explanation:
Solve:
The answer you get is:
x=2, x=-6
1.
A.add=12
B. subtract=7
C. subtract= -4
D .add=9
E. subtract=2
F. subtract= -2
G. add= -14
H. subtract= -1
2.
A.1
B.13
C.5
D.-1
E.54
F.40
G.40
H.-3
3.
A.-24
B. 24
C. -32
D. 30
E. -60
F. -40
Answer:
a) Mean = 19
b) Standard Deviation = 3.08
Step-by-step explanation:
This is binomial probability distribution. We need to find the mean and standard deviation.
a) Mean
The formula for mean is:
Where n is the number of people, which is 38 and p is the probability of girl, which is 0.5
n = 38
p = 0.5
So,
Mean = 19
b) Standard Deviation
Standard deviation has the formula:
Where n and p are the same variables in part (a)
So we plug them in and find:
Standard Deviation = 3.08