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Given data sample 66.4, 43.0, 16.4, 89.2, 68.8, 75.9, 60.8, 23.8, 15.1, 21.9, 63.2, 8.1, 19.7, 69.8, 97.2, 23.7, 89.9, 48.6, 72.1, 18.7 Test the

Given data sample

66.4, 43.0, 16.4, 89.2, 68.8, 75.9, 60.8, 23.8, 15.1, 21.9, 63.2, 8.1, 19.7, 69.8, 97.2, 23.7, 89.9, 48.6, 72.1, 18.7

Test the hypothesis that the sample variance is equal to 400.

Test the hypothesis that the sample has an expected value of 50.

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