1 POINT We are doing a two mean pooled test We have two samples with sizes n 23 and n 15 The population standard deviations are

Question

1 POINT We are doing a two mean pooled test We have two samples with sizes n 23 and n 15 The population standard deviations are unknown but assumed to be equal so we find the sample standard deviations and use them to calculate a pooled standard deviation Sp What are the test statistic 1 and the degrees of freedom to perform this test Select the correct answer below O O O For sample 1 s 15 and x 45 For sample 2 S2 15 6 and 41 O O If sp 15 236 then 23 15 t 15 236 LII V 45 df 38 If sp 15 236 then 45 41 t 15 236 A V df 38 If sp 15 236 then Sp 45 41 t 15 236 df 36 If Sp 15 236 then 45 41 df 38 TTS If Sp 15 236 then 23 15 t 0 79 15 236 15 15 236 I df 36 15 236 If sp 15 236 then Sp 23 15 t df 36 VISI 2 43 I T 2315 1 22 0 79 2 43 1 58

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