Use the table below to answer the following question.
Table 2.1.3
Production possibilities for a society that produces only two
goods - hockey sticks and maple leaves 
-Refer to Table 2.1.3.In moving from combination C to combination B,the opportunity cost of producing one additional hockey stick is
Definitions:
Confidence Interval
A span of numbers obtained from sampled data which probably encompasses the value of a not yet known parameter of the overall population.
Cholesterol
A waxy, fat-like substance found in the cells of the body, important for various biological functions but harmful at high levels.
Margin of Error
A statistic expressing the amount of random sampling error in a survey's results, indicating the confidence in how closely the sample estimates reflect the population.
Sign Test
A nonparametric test used to determine if there is a significant difference between paired observations, by analyzing the signs of differences without assuming any particular distribution.
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