Which of the following goals should a good survey instrument accomplish?
The weekly incomes of a large group of executives are normally distributed with a mean of $2,000 and a standard deviation of $100. What is the z-score for an income of $2,100?
As the size of the sample increases, what happens to the shape of the distribution of sample means?It cannot be predicted in advanceIt approaches a normal distributionIt is positively skewedIt is negatively skewed
BankChoice is concerned about stagnating profits and asks, "How can profitability be improved?" This is an example of a(n) _____.