In a clinical trial, 19 out of 800 patients taking a prescription drug complained of flulike symptoms. Suppose that it is known that 2.9% of patients taking competing drugs complain of flulike...

In a clinical trial, 19 out of 800 patients taking a prescription drug complained of flulike symptoms. Suppose that it is known that 2.9% of patients taking competing drugs complain of flulike symptoms.

Is this sufficient evidence to conclude that less than 2.9% of this drug's users experience flu-like symptoms as a side effect? (Let α=0.05)