Answer:
C) 28
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a random variable X, with mean and standard deviation , the sample means with size n of at least 30 can be approximated to a normal distribution with mean and standard deviation
Over the entire six years that students attend an Ohio elementary school, they are absent, on average, 28 days due to influenza.
By the Central Limit Theorem, the expected value is 28.
So the correct answer is:
C) 28
You have to set up a ratio and solve
Answer:
0.8
Step-by-step explanation:
I think because if you divided 40 by 14 its 2.8 minus 2 is 0.8
Answer:
y = -1/9x - 18
Step-by-step explanation:
Using the equation of line
y - y_1 = m(x - x_1)
y = mx + C
First first the slope of the equation
y = 9x - 4
Note: if two lines are perpendicular, their slope will be negative reciprocal
Slope = 9, but because it is perpendicular
m = -1/9
Using the equation
y - y_1 = m(x - x_1)
With the point (-9,-17)
x_1 = -9
y_1 = -17
y - (-17) = -1/9(x - (-9)
y + 17 = -1/9(x + 9)
y = -1/9(x + 9) - 17
Open the bracket.
y = (-x -9)/9 - 17
Lcm is 9
y = -x -9 - 153 / 9
y = -x - 162 / 9
Let's separate
y = -x/9 - 162/9
y = -x/9 - 18
y = -1/9x - 18
Therefore, the equation of the line is y = -1/9x - 18
Answer:
Step-by-step explanation:
9(x + 1) = 25 + x
9x + 9 = 25 + x
Bringing like terms on one side
9x - x = 25 - 9
8x = 16
x = 16/8 = 2