Question: I need help getting started: The average spending at Neco's salad bar is $9.9 with a standard deviation of $2.68.The distribution follows t-distribution.The management is

I need help getting started:

The average spending at Neco's salad bar is $9.9 with a standard deviation of $2.68.The distribution follows t-distribution.The management is interested in the middle 90% of the customers (spending wise) as it believes that they represent their true customer base.What will be the difference between the upper and lower spending cut-offs which define the middle 90% of the customers if the sample contains 41 customers?

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