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hypothesis_test_tails_lecture_notesa.pdf

LECTURE NOTES

Instructions Read the Research Question (RQ) then:

1. Identify the RQ key word in the RQ that provides the direction. 2. Choose the direction of the alternate hypothesis from Hypothesis Choices, a., b., or c. 3. Identify the Dependent (DV) and Independent variables (IV).

Hypothesis Choices

RQ key word Direction Null (Ho) Alternate (H1)

difference a. Two-tail Ho: µ1 = µ2 H1: µ1 ≠ µ2

less, decrease, lower b. One-tail, Left Ho: µ1 ≥ µ2 H1: µ1 < µ2

more, greater, increase c. One-tail, Right Ho: µ1 ≤ µ2 H1: µ1 > µ2

1. RQ: Is there an increase in baking time based on oven (#1, 2)?? RQ key word: increase H1 Direction: Right tail, c.

DV: Baking time (minutes) IV: Oven (#1, #2)

2. RQ: Is there a decrease in baking time based on oven (#1, 2)?? RQ key word: decrease H1 Direction: Left tail, b.

DV: Baking time (minutes) IV: Oven (#1, #2)

3. RQ: Is there a difference in baking time based on oven (#1, 2)?? RQ key word: difference

H1 Direction: Two tail, a. DV: Baking time (minutes) IV: Oven (#1, #2)