Page 60 - Basic Statistics
P. 60

55





                            The rejection region or  the rejection values is shown in Figure 4.3























                            Figure 4.3   The rejection region if used alternative hypothesis H :     
                                                                                                       0
                                                                                              1


                     Worked Example  4.1:

                          In  an  interesting  collection  of  data  with  a  sample  from  a  population

                     obtained (after the data are sorted) as follows :



                            7.8910        8.7619         8.8901        9.1033         9.8530
                            9.8728            10.0135    10.3151       10.3221        10.8333

                               11.0250            11.5518   11.9744    12.3591        12.7180


                     If  we  know  that  the  data  is  from  a  normally  distributed  population  with

                     variance is 2 and wanted to know whether the population still has a mean value

                     of 10, then we will perform the following hypothesis test, if let's say you want to

                     use significance level   = 0.05.

                     Worked Solution:

                     Test hypothesis:

                                   H :   = 10
                                     0
                                   H  :    10
                                     1




                                           ~~* CHAPTER 4   HYPOTHESIS TESTING *~~
   55   56   57   58   59   60   61   62   63   64   65