Page 67 - สถิติทางวิทยาศาสตร์สุขภาพ เพื่อการวิจัย
P. 67

ª√–™“°√






                                                         m = 1,600




                                                                                                µ—«Õ¬à“ß


                                      x  = 1,578             x 2                        x k
                                      1







                                     §à“ x ∑—ÈßÀ≈“¬¡“®“°
                                      ª√–™“°√‡¥’¬«°—π

                                                                     °“√·®°·®ß¢Õß x
                                                           95%






                                                   x x ...   m       x k
                                                   1 2



                                      ¿“æ 4.1  °“√·®°·®ß¢Õß x °—∫°“√ √ÿªº≈°“√∑¥ Õ∫ ¡¡µ‘∞“π


                                  „π°“√µ—¥ ‘π„®®–·∫àßæ◊Èπ∑’Ë¢Õß‚§âß°“√·®°·®ß¢Õß§à“ ∂‘µ‘ÕÕ°‡ªìπ 2  à«π §◊Õ

                           ‡¢µ¬Õ¡√—∫ (acceptance region) ·≈–‡¢µªØ‘‡ ∏ (rejection region) ®ÿ¥∑’Ë·∫àßæ◊Èπ∑’ˇ√’¬°«à“
                           ®ÿ¥«‘°ƒµ (critical point) ®÷ß¡’°“√‡√’¬°™◊ËÕ‡¢µªØ‘‡ ∏Õ’°™◊ËÕÀπ÷Ëß«à“‡¢µ«‘°ƒµ (critical
                           region) ´÷Ë߇¢µªØ‘‡ ∏À√◊Õ‡¢µ«‘°ƒµ®–Õ¬Ÿà∑’˪≈“¬‚§âß∑—Èß Õߢâ“ß À√◊ÕÕ¬Ÿà∑’˪≈“¬¥â“π„¥
                           ¥â“πÀπ÷Ëß ¢÷ÈπÕ¬Ÿà°—∫ ¡¡µ‘∞“π∑’˵—Èߢ÷Èπ ”À√—∫°“√∑¥ Õ∫´÷Ëß®–Õ∏‘∫“¬„πÀ—«¢âÕ∂—¥‰ª

                                  æ◊Èπ∑’ˇ¢µ¬Õ¡√—∫À√◊Õ‡¢µªØ‘‡ ∏ ¡¡µ‘∞“π °”À𥮓°√–¥—∫§«“¡‡™◊ËÕ¡—Ëπ¢Õß°“√
                            √ÿªº≈ ∂â“°”Àπ¥„Àâ§«“¡‡™◊ËÕ¡—Ëπ¢Õß°“√ √ÿªº≈∂Ÿ°µâÕ߇∑à“°—∫√âÕ¬≈– 95 À¡“¬§«“¡«à“
                           ‡¢µ¬Õ¡√—∫§√Õ∫§≈ÿ¡√âÕ¬≈– 95 ¢Õß x ∑’Ë ÿࡉ¥âµ“¡ ¡¡µ‘∞“π∑’˵—È߉«â (m = 1,600)





                     66    ∫∑∑’Ë 4  °“√∑¥ Õ∫§«“¡·µ°µà“ß





          ∫∑∑’Ë 4                  66                                    2/7/09, 3:45 PM
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