## Answers

sample mean = -1.875

t critical= 2.3646

sM = √(1.6421^2/8) = 0.5806

μ = M ± t(sM)

μ = -1.875 ± 2.3646*0.5806

μ = -1.875 ± 1.3729

95% CI [-3.25, -0.50].

**You can be 95% confident that the population mean (μ) falls between -3.25 and -0.50**

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