In class of remedial English taught by lecture method, 52 out of 75 students completed the course with a passing grade
In class of remedial English taught by lecture method, 52 out of 75 students completed the course with a passing grade. In same course with computer-assisted instruction, 69 out of 95 completed course with passing grade. At .05 level, is there a significant difference in passing rates for the 2 different methods of instruction?
Solution: We use z-test for proportions to test
The z-statistics is computed as
where
, 
, 
Replacing the values at the z-statistics we get that
The critical values for the 0.05 level are
. Therefore, we cannot reject the null hypothesis, which means that we don’t have enough evidence to claim that there is a significant difference in passing rates for the 2 different methods of instruction
Related Content
Combining Efforts with a Statistics Expert - StatisticsHelp
The U.S. Weather Bureau has provided the following information about - StatisticsHelp
