Answer:
A positive value of <em>z</em> indicates the sample mean is more than the population mean.
Step-by-step explanation:
The <em>z</em>-score or the standardized normal distribution score is defined as:
Here,
= sample mean
= population mean
= population standard deviation
<em>n</em> = sample size.
The value of population standard deviation is always positive since it is the square of the deviations of values from their mean.
Then if the value of <em>z</em> is positive or negative is determined by the value of and .
- If <em>z</em> = positive, this implies that
That is the sample mean is greater than the population mean.
- If <em>z</em> = negative, this implies that
That is the sample mean is smaller than the population mean.
Thus, a positive value of z indicates the sample mean is more than the population mean.
Answer:
Underfined
Step-by-step explanation:
There are no values of
x
that make the equation true.
Undefined
Answer:
$1040
Step-by-step explanation:
As 80/20 insurance policy is a form of coinsurance in which deductible is satisfied first and then the client would pay 20% of additional medical costs and the remaining 80% is paid by the insurance company. Under the current scenario, Veronica will bear an amount of $250 and $790(i.e. 20% of the amount after deductible), totaling to $1040.
Answer: m = 1/2
Step-by-step explanation: To find the slope of the line, we would first put the equation in y = mx + b form to get y by itself on the left side.
So divide both sides by 2 to get y = 1/2x - 4.
Now the slope is the coefficient of the x term which is 1/2.
This is a positive slope.
For this case we have that by definition, the equation of the line of the slope-intersection form is given by:
Where:
m: It's the slope
b: It is the cut-off point with the y axis
We have two points through which the line passes:
We found the slope:
Substituting we have:
Thus, the equation is of the form:
We substitute one of the points and find the cut-off point:
Finally, the equation is:
ANswer:
