s2 = 4.54 10, M = 2.9, SS = 40.9, Optimistic: n = 10, M = 6.8, SS = 25.6, s? = 2.84 Pessimistic:n = Step 1: State the hypotheses. (Select A, B, or C) (C) HO: µ1 – µ2 + 0 H1: µ1 – µ2 = 0 (A) HO: µ1- µ2...

Step 1: State the hypotheses.

(Select A, B, or C)

Hypotheses =

Step 2: State the critical values.

df =

t-critical value = +/-
(use 3 places to the right of the decimal point)

Step 3: Compute the test statistic: Summary Statistics

Pooled Variance: s_P
² =
(Use 3 dec. places)

Pooled Standard Deviation: s_P =
(Use 3 dec. places)

Extracted text: s2 = 4.54 10, M = 2.9, SS = 40.9, Optimistic: n = 10, M = 6.8, SS = 25.6, s? = 2.84 Pessimistic:n = Step 1: State the hypotheses. (Select A, B, or C) (C) HO: µ1 – µ2 + 0 H1: µ1 – µ2 = 0 (A) HO: µ1- µ2 = 0 H1: µ1- µ2 # 0 (B) HO: µ1 # µ2 H1: µ1 = µ2 Hypotheses = Step 2: State the critical values. df = %3D t-critical value = +/- %3D (use 3 places to the right of the decimal point) Step 3: Compute the test statistic: Summary Statistics Pooled Variance: Sp? = (Use 3 dec. places) Pooled Standard Deviation: Sp %3D (Use 3 dec. places)


Extracted text: Q21. Individual actions can play a large role in the overall health of our planet. A researcher interested in evaluating environmentally friendly behaviors evaluated how often people recycle (per month) based on based on whether they have an overall optimistic or an overall pessimistic attitude toward eco-friendly behaviors. The results from this hypothetical study are given in the table below. Test the hypothesis that the number of complaints changed after the new policy, using a two-tailed test, a = .05. Pessimistic Optimistic 3 4 9 4 6. 8. 1 9. 3 6. 8 6. 10, M = 2.9, SS = 40.9, s? = 4.54 Optimistic: n = 10, M = 6.8, SS = 25.6, s? = 2.84 Pessimistic:n = %3D m LO O