Instruction 8-11
The principal of a high school of a small suburb wants to make sure that no more than 5% of the students skip more than 10 days of school in a year.A random sample of 145 students from a population of 800 showed that 12 students skipped more than 10 days of school last year.
-Referring to Instruction 8-11,the principle can conclude with 95% level of confidence that no more than 5% of the students in the high school skipped more than 10 days of school last year.

Question

Quizplus · Accepted Answer

The sample proportion of students who skipped more than 10 days is 12/145, which is approximately 8.28%. This is higher than the 5% threshold, and a hypothesis test or confidence interval would likely show that the true proportion exceeds 5% with 95% confidence.

Instruction 8-11 The Principal of a High School of a Small Suburb