Ss 1. The e data below energy drinks on are from an independent measure experime
ID: 3318901 • Letter: S
Question
Ss 1. The e data below energy drinks on are from an independent measure experiment comparing three different an Using an alpha level of 05, determine whether this data set indicates any significant among the treatments. If there are any differences, use post hoc tests to evaluate which treatments groups are different from another Herbal Tea 10 14 12 16 Control Grand Mean Mean T,- Mean T2 . Mean T3 Red Bull 20 17 16 12 10 12 15 Total Total: Total,- SS1 Source Betweern Within Total df MS E te Bar Graph and Show all calculations for your planned comparisons. Then describe your results. Which groups were different from each other?Explanation / Answer
One-way ANOVA: Control, Herbal tea, Red Bull
Source DF SS MS F P
Factor 2 98.67 49.33 7.66 0.011
Error 9 58.00 6.44
Total 11 156.67
S = 2.539 R-Sq = 62.98% R-Sq(adj) = 54.75%
Individual 95% CIs For Mean Based on Pooled StDev
Level N Mean StDev +---------+---------+---------+---------
Control 4 10.000 2.828 (--------*-------)
Herbal tea 4 13.000 2.582 (-------*-------)
Red Bull 4 17.000 2.160 (--------*-------)
+---------+---------+---------+---------
7.0 10.5 14.0 17.5
Pooled StDev = 2.539
Grouping Information Using Tukey Method
N Mean Grouping
Red Bull 4 17.000 A
Herbal tea 4 13.000 A B
Control 4 10.000 B
Means that do not share a letter are significantly different.
Tukey 95% Simultaneous Confidence Intervals
All Pairwise Comparisons
Individual confidence level = 97.91%
Control subtracted from:
Lower Center Upper -----+---------+---------+---------+----
Herbal tea -2.014 3.000 8.014 (-------*-------)
Red Bull 1.986 7.000 12.014 (--------*-------)
-----+---------+---------+---------+----
-6.0 0.0 6.0 12.0
Herbal tea subtracted from:
Lower Center Upper -----+---------+---------+---------+----
Red Bull -1.014 4.000 9.014 (--------*-------)
-----+---------+---------+---------+----
-6.0 0.0 6.0 12.0
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