A trаvel аgency repоrted thаt amоunt spent per day per persоn at a vacation destination follows a Normal distribution with a standard deviation of $235 and an average of $979. We want to find the range of amounts (lower and upper in $) that fols spend, assuming the spending is within the middle 80% (with the remaining 20% equally distributed in the two tails) of per day per person spending distribution at the vacation destination. What are the correct Excel formulas to be used (among the ones listed below) that will help us find the answer?