A marketing firm claims that its ad campaign will increase sales for a fast-food chain by
15%. In a random sample of 25 stores, the average increase in sales was 16% with a
standard deviation of 5%.
What is the z value for the this example rounded to the nearest hundredth?

step-by-step explanation:

in which figure is point g a centroid

i need a picture

step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c