In a cathode interference resistance experiment, with filament voltage constant, the plate current was measured on seven twin triodes. Analyze the data given below.

1. What assumptions does he need to draw conclusions?
2. Calculate the Wilcoxon signed rank test statistic (T+). Show the calculation step by step.
3. Enter the data and conduct Wilcoxon signed rank test using R. Take a screenshot of R and paste it here to show the work.

Plate Current Readings
Tube	A	B
1	1.176	1.279
2	1.230	1.000
3	1.146	1.146
4	1.672	1.176
5	0.954	0.699
6	1.079	1.114
7	1.204	1.114