Answer:
Compute alpha (α): α = 1 - (confidence level / 100)
Find the critical probability (p*): p* = 1 - α/2
To express the critical value as a z-score, find the z-score having a cumulative probability equal to the critical probability (p*).
Step-by-step explanation:
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s = -1/6
as x increases 6 units, y decreased 1 unit
Slope is Δy/Δx = -1/6