8. critical t-value of 2.228 computed t-value of 1.987 The computed t-value is at the region. 9. critical t-value of t1.812 computed t-value of -1.915 The computed t-value is at the region. 10. critical t-value of -1.860 computed t-value of -2.3 The computed t-value is at the region.

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