Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?

12.20.

Step-by-step explanation:

Variance = ∑( x - m)^2 / n      where m = mean and n = number of readings.

m = 84/12 = 7.

x - m for the first value is 10.4 - 7 = 3.4.

Create a table:

x - m   (x - m)^2

3.4       11.56

3.3        10.89

4.7        22.09

4.1        16.81

1             1

-2.6      6.76

-4.4       19.36

-5.2      27.04

-4.5       20.25

-2.6        6.76

0.3         0.09

2.5          6.25

Total:

∑(x -m) ^2  =    148.86

So the variance = 148.86 / 12

= 12.20 (answer).

the correct answer is D. 12.405

Step-by-step explanation:

step-by-step explanation:

g(x) = 3*(8(3^(x−2))+2)

g(x) = 24 (3^(x-2) )+6

the factor is 2

step-by-step explanation:

let f(x)=8(3^(x−2)+2)

to stretch a graph by 3, it would be 3f(x)

g(x) =3f(x)

g(x) = 3*(8(3^(x−2))+2)

g(x) = 24 (3^(x-2) )+6

x     −2     0     2     4     6

f(x) 1/64 1/16   1/4     1     4

1/64 * z * z = 1/16

i multiplies by z twice because it its 2 steps from -2 to 0

1/64 z^2 = 1/16

multiply by 64 to clear the fraction on the left side

1/4 * 64 z^2 =1/16 *64

z^2 = 4

take the square root of each side

sqrt(z^2) = ±sqrt(4)

z = ±2  

we are multiplying by 2 each time.