An analyst is interested in testing whether four populations have equal means. The following sample data have been collected from populations that are assumed to be normally distributed with equal variances: Sample 1 Sample 2 Sample 3 Sample 4 9 12 8 17 6 16 8 15 11 16 12 17 14 12 7 16 14 9 10 13 Conduct the appropriate hypothesis test using a significance level equal to 0.05. (All numerical values must have 4 digits after the decimal. Moodle will flag error when the values are rounded) AN OVA Source of Variation 88 M Population: ' 'One \"Two ' Multiple Test Statistic Formula #i |:| I-IllnnI-I'neie Hn E 3 3 Source of Variation Between Groups Within Groups Population: ' 'One "Two ' Multiple Test Statistic Formula #: - Hypothesis IIII HA= _ - I a = - Graph: _ Distribution: - Decision Criteria . . . . . Left Critical Value: D Right CrItIcal Value: |:| Value conc'usion l! we conclude, there is _ evidence to suggest that there is differences in Conclusion-2 the mean values of the groups