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From two normally distributed populations, two independent samples are selected with the following information: n = 18, x = 7.82,01 = 2.35 n, = 15,

From two normally distributed populations, two independent samples are selected with the following information: n = 18, x = 7.82,01 = 2.35 n, = 15, x, = 5.99,0, =3.17 Test at 1% significance level if the two population means are different

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