The following frequency table shows a distribution for a random sample of 25 customers at a variety store. The distribution shows the amount in dollars and the relative frequency for the 25 customers at a shoe store. Purchase Amount    Relative Frequency $30 – $40                  0.15 $41 – $51                  0.06 $52 – $62                   $63 – $73                  0.27 $74 – $84                  0.19 $85 – $95                  0.25 Find the missing relative frequency. Determine the midpoints of the classes and use them to compute the average test score for the sample.

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