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Could you please show work so I can study for my exam: 6. Two samples from two different and independent populations produced s. = 72,

Could you please show work so I can study for my exam:

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6. Two samples from two different and independent populations produced s. = 72, n1 = 13, $3 = 20, n2 = 16. Test of = 0? versus of # o? at the .02 level of significance. 7. If x = 5 of n = 20 patients suffered serious side effects from a new medication, test the null hypothesis 0 = .5 versus 0 0)

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