An experiment was conducted to investigate the effect of general hospital experience on the attitudes of physicians toward the lower-income group. A random sample of 50 physicians who had just completed 4 weeks of service in a general hospital were categorized according to their concern for lower-income group before and after their general hospital experience. The data are shown in the table. Do the data provide sufficient evidence to indicate a change in "concern" after the general hospital experience? If so, describe the nature of the change. 
Definitions:
Operations Management
The administration of business practices aimed at ensuring maximum efficiency within a company, focusing on managing processes that transform inputs into outputs.
Executive Compensation
The total of all benefits, perks, and salary provided to top-level management and company executives, reflecting their role and responsibilities.
Resource Acquisition
The process of identifying, obtaining, and managing resources needed by an organization for its operations.
Craft Shop
A small-scale workshop or business focused on the production of handmade arts, crafts, or specialty items.
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