Answer:
Step-by-step explanation:
Sample variance when large number of samples are drawn we have tend to become a normal distribution.
Variance of the sample is different since variance
Var(x) = E(x^2)-{E(x)}^2
is the formula used for finding the variance of any sample.
But sampling distribution of variance requires repeating this process with the different samples several times.
So option A is not right
B is also not correct, C is wrong
D.The sampling distribution of the mean requires multiple samples to be compared. However, in this situation you are looking for the variance, so finding the sample variance is the same as investigating the sampling distribution of the variance.
is correct
Answer:
Step-by-step explanation:
If you want to write the equation of a line given only 2 points, you would first find the slope of both points using the slope formula, [(y2-y1)/(x2-x1)].
Then once you have your slope, you would use the point-slope formula to write your equation. (y-y1=m(x-x1)).
Answer:
62.182°
Step-by-step explanation:
Using <em>cos</em> and <em>sin</em> you are able to find the height of the ladder from the bottom of the house to the place the top of the ladder is. You can do this by making a triangle. By using the lengths and angles already present you are able to find all angles of the triangle.
Well I don't know !
Let's work it out together:
3(x - 2) = -3x + 42
Eliminate parentheses: 3x - 6 = -3x + 42
Add 6 to each side: 3x = -3x + 48
Add 3x to each side: 6x = 48
Divide each side by 6 : x = 8
25/100 is 1/4 in similest form