Exam 28: Application of Confidence Interval Estimation in Auditing

TABLE 8-14 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. -True or False: Referring to Table 8-14,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.

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(True/False)

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Question 1

Correct Answer:

Verified

False

TABLE 8-16 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 8-16,what is the upper bound of the 90% one-sided confidence interval for the proportion of students who had cheated on an exam during the last 12 months?

Free

(Short Answer)

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Question 2

Correct Answer:

Verified

0.0089

TABLE 8-16 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. -True or False: Referring to Table 8-16,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.

Free

(True/False)

4.8/5

(35)

Question 3

Correct Answer:

Verified

True

TABLE 8-15 The president of a university is concerned that illicit drug use on campus is higher than the 5% targeted level.A random sample of 250 students from a population of 2,000 revealed that 7 of them had used illicit drugs during the last 12 months. -Referring to Table 8-15,what is the critical value for the 90% one-sided confidence interval for the proportion of students who had used illicit drugs during the last 12 months?

(Essay)

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(31)

Question 4

TABLE 8-16 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 8-16,what is the critical value for the 90% one-sided confidence interval for the proportion of students who had cheated on an exam during the last 12 months?

(Short Answer)

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(37)

Question 5

TABLE 8-14 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 8-14,what is the critical value for the 95% one-sided confidence interval for the proportion of students who skipped more than 10 days of school last year?

(Essay)

5.0/5

(33)

Question 6

TABLE 8-16 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. -True or False: Referring to Table 8-16,using the 90% one-sided confidence interval,the president can be 95% confident that no more than 1% of the students at the university had cheated on an exam during the last semester.

(True/False)

4.8/5

(31)

Question 7

TABLE 8-15 The president of a university is concerned that illicit drug use on campus is higher than the 5% targeted level.A random sample of 250 students from a population of 2,000 revealed that 7 of them had used illicit drugs during the last 12 months. -True or False: Referring to Table 8-15,using the 90% one-sided confidence interval,the president can be 85% confident that no more than 5% of the students at the university had used illicit drugs during the last 12 months.

(True/False)

4.8/5

(40)

Question 8

TABLE 8-15 The president of a university is concerned that illicit drug use on campus is higher than the 5% targeted level.A random sample of 250 students from a population of 2,000 revealed that 7 of them had used illicit drugs during the last 12 months. -True or False: Referring to Table 8-15,the president can be 90% confident that no more than 5% of the students at the university had used illicit drugs during the last 12 months.

(True/False)

4.9/5

(31)

Question 9

TABLE 8-15 The president of a university is concerned that illicit drug use on campus is higher than the 5% targeted level.A random sample of 250 students from a population of 2,000 revealed that 7 of them had used illicit drugs during the last 12 months. -True or False: Referring to Table 8-15,using the 90% one-sided confidence interval,the president can be 95% confident that no more than 5% of the students at the university had used illicit drugs during the last 12 months.

(True/False)

4.9/5

(27)

Question 10

TABLE 8-16 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. -True or False: Referring to Table 8-16,using the 90% one-sided confidence interval,the superintendent can be 85% confident that no more than 1% of the students at the university had cheated on an exam during the last semester.

(True/False)

4.9/5

(37)

Question 11

TABLE 8-15 The president of a university is concerned that illicit drug use on campus is higher than the 5% targeted level.A random sample of 250 students from a population of 2,000 revealed that 7 of them had used illicit drugs during the last 12 months. -Referring to Table 8-15,what is the upper bound of the 90% one-sided confidence interval for the proportion of students who had used illicit drugs during the last 12 months?

(Short Answer)

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Question 12

TABLE 8-14 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 8-14,what is the upper bound of the 95% one-sided confidence interval for the proportion of students who skipped more than 10 days of school last year?

(Short Answer)

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Question 13

Showing 1 - 13 of 13

Defining and Collecting Data

Numerical Descriptive Measures

Basic Probability

Discrete Probability Distributions

The Normal Distribution and Other Continuous Distributions

Sampling Distributions

Confidence Interval Estimation

Fundamentals of Hypothesis Testing: One-Sample Tests

Two-Sample Tests

Analysis of Variance

Chi-Square Tests and Nonparametric Tests

Simple Linear Regression

Introduction to Multiple Regression

Multiple Regression Model Building

Time-Series Forecasting

A Roadmap for Analyzing Data

Statistical Applications in Quality Management

Decision Making

Index Numbers

Chi-Square Tests for the Variance or Standard Deviation

Mcnemar Test for the Difference Between Two Proportions Related Samples

The Analysis of Means Anom

The Analysis of Proportions Anop

The Randomized Block Design

The Power of a Test

Estimation and Sample Size Determination for Finite Populations

Sampling From Finite Populations

The Normal Approximation to the Binomial Distribution

Counting Rules

Lets Get Started Big Things to Learn First

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