The prices (in dollars) for a graphing calculator are shown below for 8 online vendors. Estimate the true mean price for this particular calculator with 95% confidence. 
Definitions:
Opportunity Cost
The benefit lost when one decision is made over another, effectively the cost of forgoing the next best alternative.
Park Construction
The process of designing, planning, and building an area of land with recreational facilities, natural elements, and landscaping intended for public use.
Necessary Increase
An essential rise in quantity or capacity required to meet a specific need or to maintain equilibrium.
Opportunity Cost
The cost of forgoing the next best alternative when making a decision, representing the potential benefits missed out on.
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