Aresearcher computes the definitional formula for ss, and finds that σ(x − m) = 44. if this is a sample of 12 scores, then what would the value of sample variance be using the computational formula?

a. 3.7

b. 4.0

c. 44

d. not possible to know because the scores are not given

Option B.

Step-by-step explanation:

Given information:

Σ(x − M) = 44

where, M is mean.

Sample size = 12

The computational formula for sample variance is

where, M is sample mean and N is sample size.

Substitute Σ(x − M) = 44 and N=12 in the above formula.

The sample variance is 4.0.

Therefore, the correct option is B.

answerim :

n

step-by-step explanation:

im not sure but my dad knows

answer:

given the linear inequality :

add 2y to both sides we get;

simplify:

add 12 to both sides of an equation;

simplify:

divide both sides by 2 we get;

or

the related equation for the inequality equation [1] is;

y-intercepts defined as the graph crosses the y-axis.

substitute x =0 in [2] to solve for y;

y = 6

x-intercepts defined as the graph crosses the x-axis.

substitute value y = 0 to solve for x;

subtract 6 from both sides we get

multiply both sides by 2 we get;

or

x = -12

now, plot these point (0, 6) and (-12, 0) on graph as shown below and shade the graph below the solid line.