Answer:
Step-by-step explanation:
Given
Required
Write an equation when sales = x
The equation can be written as:
This gives
Convert percentage to decimal
Will mark brainliest if you answer correct. also 30 points for one question
1 answer:
You might be interested in
Answer:
The desviation is 8 4/7 or 8.571
Step-by-step explanation:
The conversion for any variable X to a standard z is
where mu is the mean and sigma de desviation
You can find the value of Z whith the tables of the accumulated probability function. The accumulated probability for the mean is 0.5 .Remenber that the accumlated probability function represent the area at the left of an abscissa. Then
0.5+0.3531=0.8531
Acording to the accumulated probability function table, a Z=1.05 has an area of 0.8531 at its left.
Now it is only solving the equation
σ=
σ=8.571
