1. It has been found that the impact of the Palbociclib on 6 males animals (3-5 months)...
Question:
1. It has been found that the impact of the Palbociclib on 6 males animals (3-5 months) and another 6 males animals (2-4 months) increased over time with the tumor in comparison to a vehicle (t(8)=3.71, p<0.01, unpaired t-test). What is the t-value? 2. What is the total sample size for the analysis? 3. What is the effect size using d=2t/n 4. This considered a small, medium, or large effect size? 5. Using G-power, use priori power analysis and calculate the total sample size to achieve 80% power when alpha = 0.05 given the effect size calculated in question 3.
6. Among those 15 individuals, calculate (either in excel or the R script):
Black | White | Orange |
0.80 | 3.55 | 2.05 |
1.15 | 2.75 | 2.40 |
1.15 | 1.60 | 0.85 |
1.75 | 3.50 | 1.75 |
1.30 | 2.50 | 2.55 |
A. The mean of Black. B. The mean of White. C. The mean of Orange. D. The pooled standard deviation either in excel or the R script. C. The effect size for your pilot analysis. D. The total sample size to achieve 80% power if alpha =0.05. (Use G-power or R).