In: Statistics and Probability
The University is trying to decide whether to implement a mandatory remedial math course for students with low test scores upon admissions. Historically, students with low admissions test scores have failed their first math course 61% of the time. A random sample of students with low scores is selected and assigned to a remedial math course. These students are tracked and it is found that 102 out of 175 of them still fail their first regular math course.
If the hypotheses are
H0: p = 0.61 HA: p < 0.61
what is the p-value for this test?
WITH EXPLAINATION OF WORK
We have for given example,
Population proportion value is =0.61
x=102
n=175
Estimate for sample proportion =0.5829
Z test statistic formula for proportion
=-0.74
P value =0.2297.....................by using Z table or Excel for left tailed test =NORMSDIST(-0.74)