In: Math
in a clinical trial, 25 out of 852 patients taking a prescription drug daily complained of flulike symptoms. Suppose that is it known that 2.5% of patients taking competing drugs complain of flulike symptoms. is there enough evidence to conclude that more than 2.5% of this drugs users experience flulike symptoms as a side effect at the 0.1 level of significance?
Null hypothesis
Alternative hypothesis
We have for given example,
Population proportion value is =0.025
x=25
n=852
Level of significance = 0.1
Estimate for sample proportion
Z test statistic formula for proportion
=0.812
P value is = 0.2084..........................by using Excel command 1-NORMSDIST(0.812)
P value = 0.2084 > 0.10
Therefore, we fail to reject H0 at
We do have sufficient evidence at to say that, more than 2.5% of this drugs users experience flu like symptoms as a side effect.