Type of Provider Rating   Traditional 89   Traditional 87   Traditional 78   Traditional 78   Traditional 77   Traditional 74   Traditional 74   Traditional 71   Traditional 67   Traditional 65   Prepaid 89   Prepaid 87   Prepaid 82   Prepaid 82   Prepaid 79   Prepaid 77   Prepaid 75   Prepaid 75   Prepaid 75   Prepaid 73   Prepaid 72   Prepaid 69   Prepaid   Is there a difference in the satisfaction rating of traditional cellphone providers who bill for service at the end of a month often under a contract and prepaid cellphone service providers who bill in advance without a​ contract? The accompanying table contains the satisfaction rating for 10 traditional cellphone providers and 13 prepaid cellphone service providers.   A. What is the test​ statistic?   tSTAT=________ ​(Round to two decimal places as​ needed.)

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A:

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