Laura Strubel Is Reviewing Some Data from a Marketing Research

Multiple Choice

Laura Strubel is reviewing some data from a marketing research project that shows the age of persons who frequently purchase her company's product, Strubel's Gourmet Seafood frozen dinners. Laura is considering buying radio time for a new ad campaign, and knowing the age of the target market would be very helpful to her in selecting which programs to place the ads. Laura sees that the mean age of frequent buyers is 45 with a standard deviation of 12. She correctly interprets this to mean that about 70 percent (68 percent to be exact) of her target market is aged from:

A) 18 to 45
B) 45 to 68
C) 33 to 57
D) 20 to 32
E) 45 to 57