TABLE 8-9
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 8-9, 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

Quizplus · Accepted Answer

The sample proportion of students who skipped more than 10 days is 12/145 = 0.0828, which is greater than 5%. The confidence interval should be calculated to determine if it includes 5%, but the sample proportion already suggests it exceeds the target.

TABLE 8-9 The Superintendent of a Unified School District of a Small