Consider the following results for two samples randomly taken from two normal populations with equal variances. 
a.Develop a 95% confidence interval for the difference between the two population means.
b.Is there conclusive evidence that one population has a larger mean? Explain.
Definitions:
Antagonistically
In a manner that indicates mutual opposition or contradictory actions, often involving biochemical substances or muscles.
Troponin
A regulatory protein complex involved in muscle contraction, found in the muscle fibers, and sensitive to calcium concentrations.
Tropomyosin
A muscle protein involved in regulation of contraction.
Sarcomere
A segment of a striated muscle cell located between adjacent Z lines that serves as a unit of contraction.
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