U VIII

Test and ANOVA Sun Coast Remediation Data Set

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Data Analysis: Hypothesis Testing

This assignment involves using the Sun Coast Remediation data set to perform statistical tests, in particular, independent samples t test, dependent samples (paired samples) t test as well as ANOVA test. The statistical tables are illustrated.

Independent Samples t Test: Hypothesis Testing

H04: There is no statistically significant difference in variance values for training scores between Group A and Group B.

HA4: There is statistically significant difference in variance values for training scores between Group A and Group B.

The results indicate that the variance values are lower for Group B. The p value is 1.94E-15 < 0.05 (Rumsey, 2011). Therefore, the null hypothesis is rejected and the alternative hypothesis accepted since there is statistically significant difference in variance values between Group A and Group B.

Dependent Samples (Paired Samples) t Test: Hypothesis Testing

H05: There is no statistically significant difference in mean values between pre-exposure and post-exposure.

HA5: There is statistically significant difference in mean values between pre-exposure levels and post-exposure levels.

The results indicate that the mean values of pre-exposure and post-exposure are almost equal. The results further indicate a p value of 0.06 > 0.05 (Rumsey, 2011). Therefore, the null hypothesis is accepted since there is statistically significant difference in mean values of pre-exposure and post-exposure levels.

ANOVA: Hypothesis Testing

H06: There is no statistically significant difference in yield between means of the variables.

HA6: There is statistically significant difference in yield between means values of the variables.

Since the p values for rows is 0.01 < 0.05 the null hypothesis is rejected (Rumsey, 2011). Therefore, the alternative hypothesis is accepted.

Reference Rumsey, D. J. (2011). Statistics For Dummies. John Wiley & Sons.