A Manufacturer of scales says that when a 100-pound weight is placed on a scale the weight indicated is nomally distributed with a mean of 100-pounds and a standard deviation of 1.5 pounds. A test is done and on 10 scales and resulting in a mean of 101.5. To test this, they simulate 100 samples with a mean of 100-pounds and a standard deviation of 1.5. A. What does each dot represent?
B. Would it be unusual to get a sample mean of 98.9? Explain.
C. Is there convincing evidence that the scales overestimate the true weight?

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

345

step-by-step explanation:

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w