STAT AND PROBABILITY NAT REVIEW

This refers to an intelligent guess about a population parameter. 

              

• Decision                  

•         Hypothesis              

• Rejection

• Significance

It is the starting point of the investigation in hypothesis testing. 

                           

•   Alpha Level 

• Null Hypothesis

• Rejection Region

• Alternative Hypothesis 

What type of decision is being committed if someone accepted a false hypothesis? 

                            

                  

• Type I Error 

• Type II Error A   

• Correct Decision

•   Correct Decision B 

What is the symbol that can be used to denote the probability of committing Correct Decision A? 

              

•   A. 𝛼                

• B. 𝛽  

• C. 1 − 𝛼                

• D. 1 − 𝛽 

The calculations in determining rejection region can be graphically represented by using _____________. 

                           

                    

• Bar Graph  

• Straight Line 

• Normal Curve

•      Cartesian Plane

The max/min probability of committing a type 1 error. 

                

• P (type II error) = ß                                     

                 

•   Ho = parameter = specific value 

  Ha = parameter < specific value

                

•   Ho = parameter = specific value

  Ha = parameter < specific value

                  

• Ho = parameter = specific value 

   Ha = parameter ≠ specific value

 The probability of type II error 

               

•   P (type II error) = ß                                     

               

•    Ho = parameter = specific value 

    Ha = parameter < specific value

               

•     Ho = parameter = specific value 

   Ha = parameter < specific value

                 

•  Ho = parameter = specific value 

   Ha = parameter ≠ specific value

 It is called the critical Region 

              

•  P (type II error) = ß                                     

                 

•   Ho = parameter = specific value 

   Ha = parameter < specific value

• Rejection region 

                 

• Ho = parameter = specific value 

   Ha = parameter ≠ specific value

 This is a two-tailed test 

              

• P (type II error) = ß                                     

                 

• Ho = parameter = specific value 

   Ha = parameter < specific value

                  

• Rejection region 

                  

• Ho = parameter = specific value 

   Ha = parameter ≠ specific value

This is a left-tailed test 

              

• P (type II error) = ß                                     

               

• Ho = parameter = specific value 

    Ha = parameter < specific value

                 

• Rejection region 

                 

• Ho = parameter = specific value 

    Ha = parameter ≠ specific value