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You have summary data for two variables: hours of sleep per night (x) and productivity score (Y). Using these values, calculate the line of best fit predicting productivity from hours of sleep, then test for a statistically significant relationship using the hypothesis-testing procedure for linear regression: Mₓ = 7.25, sₓ = 1.80, Mᵧ = 75.60, sᵧ = 8.90, r = 0.45, N = 45, SSₘ = 28.12, SSₑ = 320.45
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