An international corporation is about to open a subsidiary in Greece. Since the company involves a large number of executives who will have to move to that country, The company plans to offer an extensive program of teaching the language to the executives who will operate in Greece. For its previous operation starts in France and Italy, the company used cassettes and books provided by Educational Services Teaching Cassettes Inc. Recently one of the company directors suggested that book and cassette program offered by Metacom Inc. sold under the name The Learning Curve might provide a better introduction to the language.Two groups of 15 executives were randomly selected ,and each group studied the language under a different program. The final scores of comprehensive exam testing proficiency in language are as given below. Is there an evidence that The Learning Curve method is more effective? Test the relevant hypothesis at a 1% level of significance.

Education services    65 57 74 43 39 88 62 69 70 72 59 60 80 83 50

Learning Curve         85 87 92 98 90 88 75 72 60 93 88 89 96 73 62