Thirty customers from all customers who shopped at a large grocery store during a given week were randomly selected and their shopping expenses was noted. The following data show the expenses (in dollars) of these 30 customers.

a. Prepare a frequency distribution table for these data. Use the classes as 20 to less than 60, 60 to less than 100, 100 to less than 140, 140 to less than 180, and 180 to less than 220.
b. What is the width of each class in part a?
c. Using the frequency distribution of part a, prepare the relative frequency and percentage distributions.

d. What percentage of these customers spent less than $140 at this grocery store?
e. Make a histogram for the frequency distribution.
f. Prepare the cumulative frequency, cumulative relative frequency, and cumulative percentage distributions using the table of part a.

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145.23 191.54 102.45 46.50 87.65 55.45 45.36 158.76 111.25 133.76 91.54 67.98 134.07 64.54 156.28 123.67 89.20 187.57 56.43 165.75 67.49 23.67 212.60 135.09 65.90 193.46 88.64 44.39 120.50 153.20