Question

Homework Assignment 4 SPSS Output - Saved View Table yout Review U ab A A Heading 1 Head Paired Samples Statistics Mean N Std. Deviation Std. Error Mean posttest 23.6000 15 6.58787 1.70098 Pair 1 pretest 19.0000 15 5.69461 1.47034 Paired Samples Correlations N Correlation Sig Pair 1 posttest & pretest 15 .901 .000 Paired Samples Test Paired Differences of Sig (2-tailed) Mean Std Std 95% Confidence Interval of Deviation Error the Difference Mean Lower Upper post test Pair 1 4.60000 2.87352 .74194 3.00870 6.19130 6.200 14 000 pret est

Answer 1

1. Group 1 Mean = 23.6

Group 2 Mean = 19

t = 6.2

Reject Ho

2. This is because each subject is tested twice.

3. The hypothesis being tested is:

H₀: µ_d = 0

H_a: µ_d ≠ 0

4. The critical value is 2.145.

Since 6.2 > 2.145, we can reject the null hypothesis.

5. Since the p-value (0.000) is less than the significance level (0.05), we can reject the null hypothesis.

6. Therefore, we can conclude that swimming with dolphins helped the children.