Answer: The mean income of the three people surveyed is $33,000.
The mean or average of a data set is nothing but the sum total of all the observations in a given set of data divided by the number of observations.
The formula for calculating the mean is:

where
is the mean or average
X₁ , X₂, X₃ .......Xn refers to the observations
N is the total number of observations
Substituting the values in the formula for mean we get,



Answer:
The shortage is partly because of the failure of the national education and training system to supply the economy with much-needed skills.
There is an inflationary gap
I hope that helped
<span>c. actual usage of material exceeds the standard material allowed for output.</span>