The trade publication Potentials in Marketing

(Nov./Dec. 1995) surveyed its readers concerning their opinions of electronic marketing (i.e., marketing via the Internet, e-mail, CD-ROMs, etc.). A questionnaire was faxed to 1 .500 randomly selected U.S.

readers in August and September 1995. Of the 195 questionnaires that were returned, 37 reported that their company already has a World Wide Web site and 59 indicated that their company had plans to create one.

a. Do these data provide sufficient evidence to reject the claim by a producer of a well-known Web browser that "more than 25% of all U.S. businesses will have Web sites by the middle of 1995"?

b. Discuss potential problems associated with the sampling methodology and the appropriateness of the sample for making generalizations about all U.S.

businesses.