In a clinical trial, 18 out of 827 patients taking a prescription drug daily complained of flulike symptoms. Suppose that it is known that 1.9% of patients taking competing drugs complain of flulike symptoms. Is there sufficient evidence to conclude that more than 1.9% of this drug's users experience flulike symptoms as a side effect at the alpha=0.1 level of significance?

Because np0 (1-p0)= 10, the sample size is 5% of the population size, and the sample the requirements for testing the hypothesis satisfied.