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Which of the following are true of comparing marginal revenue to marginal cost?
(i) it reveals the contribution of the last unit of production to total profit
(ii) it is helpful in making profit-maximising production decisions
(iii) it always reveals whether a firm is making an economic profit
(iv) it tells a firm whether its fixed costs are too high
Population
In statistics, the entire pool from which a statistical sample is drawn.
Variance
A statistical measure of the dispersion of data points in a data set, showing how far each point in the set is from the mean and from each other.
Normal Probability Distribution
A bell-shaped curve that is symmetric about the mean, describing how the values of a variable are distributed, indicating most data falls close to the mean.
Sampling Distribution
The probability distribution of a given random-sample-based statistic.
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