Examinethe data distributioninthecasebelow,anddrawaninference.Based on yourinference,considerwhatactionsyouwouldtakeifyouwereacorporatemanager.

Background

Clearbizhas a policyofconductingan objective test that measures business framework,criticalthinking,andprofessionalknowledgeforselecting itsmanagerialstaff.The companyonlypromotescandidateswhoscore60 points orhigher.

The table below shows the testresults and the performance rating (standardized scoresrepresenting the degree of achievements by those same individuals) three years afterthe promotionof 42randomlysampled managerialstaffmembers.

TestScoreAtPromotion	Performance rating 3 yearsafterpromotion	TestScore AtPromotion	Performancerating3years afterpromotion	TestScore AtPromotion	Performancerating3years afterpromotion
60	90	70	59	81	86
60	45	72	78	82	90
61	60	73	78	84	58
61	66	73	63	85	70
62	55	74	91	86	72
63	52	75	73	88	75
63	88	75	70	88	81
64	60	75	80	90	77
66	66	75	94	92	63
66	62	77	81	92	86
67	90	78	74	92	84
68	72	78	92	92	97
69	64	80	99	95	99
70	70	81	84	95	90