Example 7 analyzed the trading volume of shares of General Electric stock between February and April 2011. Summary statistics of the data were calculated using MINITAB and are shown below:
The 95% confidence intervals for the means are (40.2685, 63.3679) for Monday’s volume and (42.7963, 57.2037) for Friday’s. Interpret each of these intervals, and explain what you learn by comparing them.
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