Prices for vitamins and other health supplements increased over the past several years, andthe prices charged by different retail outlets often vary a great deal. The following datashow the prices for...

Prices for vitamins and other health supplements increased over the past several years, andthe prices charged by different retail outlets often vary a great deal. The following datashow the prices for 13 products at four retail outlets in Rochester, New York (Democratand Chronicle, February 13, 2005).Item CVS Kmart Rite-Aid WegmansCaltrate D (600 mg/60 tablets) 8.49 5.99 7.99 5.99Centrum (130 tablets) 9.49 9.47 9.89 7.97Cod liver oil (100 gel tablets) 2.66 2.59 1.99 2.69Fish oil (1,000 mg/60 tablets) 6.19 4.99 4.99 5.99Flintstones Children’s (60 tablets) 7.69 5.99 5.99 6.29Folic acid (400 mcg/250 tablets) 2.19 2.49 3.74 2.69One-a-Day Maximum (100 tablets) 8.99 7.49 6.99 6.99One-a-Day Scooby (50 tablets) 7.49 5.99 6.49 5.47Poly-Vi-Sol (drops, 50 ml) 9.99 8.49 9.99 8.37Vitamin B-12 (100 mcg/100 tablets) 3.59 1.99 1.99 1.79Vitamin C (500 mg/100 tablets) 2.99 2.49 1.99 2.39Vitamin E (200 IU/100 tablets) 4.69 3.49 2.99 3.29Zinc (50 mg/100 tablets) 2.66 2.59 3.99 2.79Use a  .05 to test for any significant difference in the mean price for the four retail outlets.