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
Answer:
Step-by-step explanation:
Well Coefficent means its by it self with is called a constant. A coffecient is a number used to mulitpy a varable
Answer:
295 ft is the area of this shape
Answer:
x = −2 or x = 4.23606797749979 or x = −0.2360679774997898
Step-by-step explanation:
Subtract x^3-2x^2-9x-2 from both sides.
0 − (x3−2x2−9x−2) = x3−2x2−9x−2 − (x3−2x2−9x−2)
−x3+2x2+9x+2=0
Factor left side of equation.
(−x−2)(x2−4x−1)=0
Set factors equal to 0.
−x−2=0 or x2−4x−1=0
Answer:
A) 5
Step-by-step explanation:
Since ABC and DEF are equal they will have the sum, you'll wanna plug in the numbers into the x spots on DEF. So instead of 4x-2, try 4(5)-2.
D and F:
4(5) = 20
20 - 2 = 18
A and C also equal 18
I hope this helps,