Seldane-D, produced by Marion Merrell Dow, Inc., is an over-the-counter drug designed to relieve sneezing, nasal congestion,

Question:

Seldane-D, produced by Marion Merrell Dow, Inc., is an over-the-counter drug designed to relieve sneezing, nasal congestion, and other symptoms of allergic rhinitis. General adverse effects of Seldane-D were investigated in a double-blind, controlled study of over 500 patients suffering from allergic rhinitis. A sample of 374 patients were given Seldane-D, whereas a second sample of 193 patients were given a placebo (no drug). The number of patients reporting insomnia in each of the two groups are given in the table. Test to determine whether the proportion of patients taking Seldane-D who experience insomnia differs from the corresponding proportion for patients receiving the placebo. α = .10.