Using the first two samples of Table 8 3, which have means of 0 258 and 0 491, test the null hypothesis that 1 2 against a two tailed alternative Assume the population variances are not known Use 5

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Question: Using the first two samples of Table 8.3, which have means of 0.258 and 0.491, test the null hypothesis that 1 = 2 against a

Using the first two samples of Table 8.3, which have means of 0.258 and –0.491, test the null hypothesis that μ1 = μ2 against a two-tailed alternative. Assume the population variances are not known.

Use α = 5%.

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