Probability Values:
Classical Approach:
Comparing a test statistic and a critical value is the classical approach to hypothesis testing. This is best utilized for distributions that give areas and require you to look-up the critical value (such as the Student's t distribution) instead of distributions that have you look-up a test statistic to find out an area (similar to the normal distribution).
The Classical Approach as well has three distinct decision rules, based on whether it is a left tail, right tail or a two tail test.
One of the problems with the Classical Approach is that when a distinct level of significance is desired, a different critical value should be read from the table.
P-Value Approach:
The P-Value Approach, brief for Probability Value, approaches hypothesis testing from a different way. Rather than comparing z-scores or t-scores in the classical approach, you are comparing the probabilities or areas.
The level of significance (that is, alpha) is the region in critical region. That is, the area in tails to the right or left of critical values.
The p-value is the region to right or left of the test statistic. When it is a two tail test, then look-up the probability in one tail and doubles it.
When the test statistic is in critical region, then p-value will be less than the level of significance. It doesn’t matter whether it is a left tail, right tail or a two tail test. This rule for all time holds.
Refuse the null hypothesis when the p-value is less than the level of significance.
We will fail to refuse the null hypothesis when the p-value is more than or equal to the level of significance.
The p-value approach is fine suited for the normal distribution whenever doing computations by hand. Though, most of the statistical packages will provide the p-value however not the critical value. This is as it is simple for a computer or calculator to determine the probability than it is to determine the critical value.
The other benefit of p-value is that the statistician instantly knows at what level the testing becomes important. That is, the p-value of 0.06 would be refused at a 0.10 level of significance; however it would fail to refuse at a 0.05 level of significance.
Latest technology based Statistics Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Statistics help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Statistics, project ideas and tutorials. We provide email based Statistics help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Statistics. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Statistics Homework help and assignment help services. They use their experience, as they have solved thousands of the Statistics assignments, which may help you to solve your complex issues of Statistics. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
www.tutorsglobe.com offers Checklist Guide to Better Budgeting homework help, assignment help, case study, writing homework help, online tutoring assistance by accounting tutors.
General Characteristics of Bacteria tutorial all along with the key concepts of Size of Bacterial Cell, Shape and Arrangement of Bacterial Cell, Bacterial Structures, Structure External to the Cell Wall, Structures Internal to the Cell and Nutrition in bacteria
the major thing which sets a home theatre distant from an ordinary television setup is the surround sound.
manufacture of hydrogen tutorial all along with the key concepts of manufacture through chemical means, manufacturing by electrolysis, properties of hydrogen, uses of hydrogen
Switched Mode Power Supply tutorial all along with the key concepts of Switched-mode power supply operation, Rectifier, filter and inverter, Converter and output rectifier, Drawbacks of switched mode power supplies, switched-mode power supply
Theory and lecture notes of Economic Policy Institutions all along with the key concepts of Federal Reserve, Open market operations, Budget Process, History of Economic Policy. Tutorsglobe offers homework help, assignment help and tutor’s assistance on Economic Policy Institutions.
Paramecium tutorial all along with the key concepts of Physical Appearance of paramecium, paramecium Feeding, Respiration process in Paramecium, Movement in Paramecium, Reproduction and Importance of paramecium
tutorsglobe.com cuttings assignment help-homework help by online artificial technique of vegetative propagation tutors
www.tutorsglobe.com offers substitution of the hydroxyl group homework help, assignment help, online tutoring assistance, organic chemistry solutions by online qualified tutor's help.
The important advantages of Inter Firm Comparison are Improvement in efficiency, Increased productivity, Reliable information, Assistance to Government, etc.
The major difficulty in drying out a transformer is not drying the oil- this is fairly easily done through passing it two times or three times by an appropriate filter- it is the removal of moisture absorbed through the windings.
Types and Classification of Amplifiers tutorial all along with the key concepts of Power Amplifier, Transistor Amplifier, Operational Amplifier, Categorization of amplifiers, Common Terminal Classification, Unilateral or Bilateral Classification
Aves tutorial all along with the key concepts of Features of Class Aves, Features of Subclass Archaeonithes, Class Subclass Neornithes, Superorder Odontognathae, Palaeognathae, Struthioniformes and Tinamiformes
in drawing this type of winding, the slots that are numbered from 1 to 12 and the long and short sides are alternatively drawn.
Solubility Properties of Polymers tutorial all along with the key concepts of Solubility of gaseous substances, Rate of dissolution, Expressing solubility, Applications of solubility, Organic compounds and solubility, Solid solutions
1951949
Questions Asked
3689
Tutors
1491578
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!