Use the following figure to answer the question : Figure 9-4 : shows the marginal cost curve,the average cost curve,the average variable cost curve,and the demand curve for a firm over different levels of output.The market price is $P. 
-Refer to Figure 9-4.At the output level OB the total fixed cost is equal to _____.
Definitions:
Population Means
Refers to the average value of a particular characteristic within a total population.
Number of Treatments
Refers to the distinct levels or conditions in an experimental or observational study to investigate their effects on outcomes.
K
In various contexts, it could represent a constant value, the number of clusters in K-means clustering, or the symbol for a thousand.
Completely Randomized Design
An experimental design in which the treatments are randomly assigned to the experimental units.
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