TABLE 8-12
The president of a university is concerned that the percentage of students who have cheated on an exam is higher than the 1% acceptable level. A confidential random sample of 1,000 students from a population of 7,000 revealed that 6 of them said that they had cheated on an exam during the last semester.
-Referring to Table 8-12, the president can be 90% confident that no more than 1% of the students at the university had cheated on an exam during the last semester.

Question

Quizplus · Accepted Answer

Using Table 8-12 with a sample size of 1,000 and 6 successes, the 90% confidence interval for the proportion of students who cheated on an exam is 0.0036 to 0.0121. This interval does not include the unacceptable level of 0.01 (1%). Therefore, we can be 90% confident that no more than 1% of the students at the university had cheated on an exam during the last semester.

TABLE 8-12 The President of a University Is Concerned That the Percentage