suppose the following is to be tested hop072 and hap072 The

suppose the following is to be tested. ho;p=0.72 and ha;p=/0.72. The sample date shows that 68 out of 90 test subjects have the characteristics of interest. The one proportion test z statistic is a. z=-0.51 b. z= 0.756 c. z= 0.453 d. z=0.751

Solution

Z=p-0.72/sqrt(0.72*(1-0.72)/90

p=68/90

z=0.751