TABLE 8-11
The superintendent of a unified school district of a small town 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 Table 8-11, the superintendent can conclude with 95% level of confidence that no more than 5% of the students in the unified school district skipped more than 10 days of school last year.

Question

TABLE 8-11 
 The superintendent of a unified school district of a small town 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 Table 8-11, the superintendent can conclude with 95% level of confidence that no more than 5% of the students in the unified school district skipped more than 10 days of school last year.

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 the confidence interval would likely include values above 5%, so the superintendent cannot conclude with 95% confidence that no more than 5% skipped more than 10 days.

TABLE 8-11 the Superintendent of a Unified School District of a District