Case Information Colgate-Palmolive Makes a "Total" Effort In the mid-1990s, Colgate-Palmolive developed a new toothpaste for the U.S. market, Colgate Total, with an antibacterial ingredient that was already being successfully sold overseas. However, the word antibacterial was not allowed for such products by the Food and Drug Administration rules. So Colgate-Palmolive had to come up with another way of marketing this and other features of their new toothpaste to U.S. consumers. Market researchers told Colgate- Palmolive that consumers were weary of trying to discern among the different advantages of various toothpaste brands and wanted simplification in their shopping lives. In response, the name "Total" was given to the product in the United States: The one word would convey that the toothpaste is the "total" package of various benefits. Young & Rubicam developed several commercials illustrating Total's benefits and tested the commercials with focus groups. One commercial touting Total's long-lasting benefits was particularly successful. Meanwhile, in 1997, Colgate-Palmolive received FDA approval for Total, five years after the company had applied for it. The product was launched in the United States in January of 1998 using commercials that were designed from the more successful ideas of the focus group tests. Total was introduced with a $100 million advertising campaign. Ten months later, 21% of all United States households had purchased Total for the first time. During this same time period, 43% of those who initially tried Total purchased it again. A year after its release, Total was the number one toothpaste in the United States. Total is advertised as not just a toothpaste but as a protective shield that protects you for a full range of oral health problems for up to 12 hours. Total is now offered in a variety of forms, including Colgate Total Advanced Whitening, Colgate Total Advanced Clean, Colgate Total Advanced Fresh Gel, Colgate Total Clean Mint Paste, Colgate Total Whitening Paste, Colgate Total Whitening Gel, Colgate Total Plus Whitening Liquid, and Colgate Total Mint Stripe Gel. In the United States, market share for Colgate Total toothpaste was 16.2% in a recent year, which was its highest quarterly share ever Question: Is age category independent of willingness to try new products? According to the U.S. Census Bureau, approximately 20% of all Americans are in the 45-64 age category. Suppose 24% of the consumers who purchased Total for the first time during the initial 10-month period were in the 45-64 age category. Use this information to determine whether age is independent of the initial purchase of Total during the introductory time period. Explain your answer.