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Two independent samples were collected. For the first sample of 42 items, the mean was 32.3 and the variance 9. The second sample of 57
Two independent samples were collected. For the first sample of 42 items, the mean was 32.3 and the
variance 9. The second sample of 57 items had a mean of 34 and a variance of 16. Using the 0.05 level of
significance, test whether there is sufficient evidence to show the second population has a larger mean.
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