Given the following information, calculate sp2, the pooled sample variance that should be used in the pooled-variance t test. 
Definitions:
Product Development
The creation of new products or improvement of existing products to meet customer needs or market opportunities.
Commercialization
The process of bringing new products or services to market, including production, distribution, and marketing strategies to turn innovations into viable business offerings.
Product Development
The process of bringing a new product from concept through to the market, involving stages such as ideation, design, testing, and launch.
Commercialization
The process of bringing new products or services to the market, ensuring they can be manufactured at a scale and marketed effectively to generate profit.
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