43. Many shoppers have expressed unhappiness because grocery stores have stopped putting prices on individual grocery items. The article The Impact of Item Price Removal on Grocery Shopping Behavior

(J. Marketing, 1980: 73—93) reports on a study in which each shopper in a samplewas classi ed by age and by whether he or she felt the need for item pricing.

Based on the accompanying data, does the need for item pricing appear to be independent of age?

Age 30 30 –39 40 – 49 50 –59 60 Number in Sample 150 141 82 63 49 Number Who Want 127 118 77 61 41 Item Pricing