Solved Problems in Probability and Statistics
Probability and Statistics Problems
Problem 1: Selecting a Group
Florida State University (FSU) wants to select 3 men and 2 women from a group of 8 men and 5 women. How many ways can the group of five persons be selected?
Solution:
- Ways to select 3 men from 8: 8! / (3! * (8-3)!) = 56
- Ways to select 2 women from 5: 5! / (2! * (5-2)!) = 10
- Total ways to select the group: 56 * 10 = 560
Therefore, there are 560 ways to select the group.
Problem 2: DEBORA
Problem 3: New Toy Success Rate
A toy company is planning
Read MoreStatistical Analysis in Socioeconomic Research: Methods and Applications
Test: Objective
Drawing Conclusions and Ascertaining the Importance of Economic Management
Draw conclusions and ascertain the importance of economic management, depending on whether individuals are employed (yes/no).
Conclusions (indicating value means)
- Importance of “1”: The second chart shows a degree of proof for Levene’s test for equal variances of 0.654 > 0.05. Therefore, Ho is accepted. So, the means (bilateral) for the T-test equal smear result medium (Ho: µ1 = µ2) is 0.436 > 0.05. Then,
Understanding Financial Accounting Audits
In financial accounting, an accounting audit is an independent assessment of a company’s financial statements. It is carried out by a competent, independent, and objective person known as an auditor or accountant. The auditor then issues a report based on the audit results.
The Role of Accounting Audits
The accounting audit is a critical and systematic analysis performed by a neutral person or group of the audited system. While there are many kinds of audits, an accounting audit usually refers to
Read MoreUnderstanding Language Variations: Youth, Regional, and Social Influences
Juvenile Language
Juvenile language is motivated by the desire of young people to differentiate themselves from older generations. They often use recent creations and a glossary of anglicisms from marginal languages. There is also an influence from new technologies. However, this carefree attitude sometimes leads to a decrease in accuracy and an impoverishment of lexical or syntactical resources.
Older Generations
Older generations tend to have a more conservative language, using words unfamiliar to
Read MoreMeasurement Principles and Error Analysis in Metrology
1. Definition of Measurement
The measurement process involves experimentally obtaining one or more quantity values that can reasonably be attributed to a quantity.
2. Uncorrected Result, Corrected Result, Final Result
- Uncorrected result: Result of a measurement before correction for systematic error.
- Corrected result: Result of a measurement after correction for systematic error.
- Final result: Result of a measurement after correction for systematic error, accompanied by estimated uncertainty from random
Implementing Audit Policies in Oracle Database
Creating a Privilege Audit Policy
Steps:
- Create user xyz1 and grant user resource, connect, create, and drop any table privileges.
- Grant the user xyz1 the privilege to select any table:
GRANT SELECT ANY TABLE TO xyz1; - Create policy:
CREATE AUDIT POLICY aud100PRIVILEGES select any table, create libraryWHEN 'SYS_CONTEXT (''USERENV'', ''SESSION_USER'') = ''xyz1'' 'EVALUATE PER STATEMENT; - Enable Policy:
AUDIT POLICY aud100; - View the audit policy options:
SELECT POLICY_NAME, AUDIT_OPTION, CONDITION_EVAL_OPTFROM