2. A researcher wishes to estimate the mean weekly wage of several thousands of workers employed in a plant within plus or minus $20 and with 90% degree of confidence. From past experience, the researcher knows the weekly wages of these workers are normally distributed with a standard deviation of $40. What is the minimum sample size required.

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

10.4 inches

step-by-step explanation:

2x2x2.6

i don't think there is enough