One job of a statistician is to make statistical inferences about populations based on samples taken from the population. Another way to make a statistical inference is to make a decision about a para...One job of a statistician is to make statistical inferences about populations based on samples taken from the population. Another way to make a statistical inference is to make a decision about a parameter. For instance, a car dealer advertises that its new small truck gets 35 miles per gallon, on average. A tutoring service claims that its method of tutoring helps 90% of its students get an A or a B. A company says that women managers in their company earn an average of $60,000 per year.
