+23252 The number of days for the test is 10.
p(0) represents the number of days that there were 0 successful tests divided by the number of days.
p(1) represents the number of days that there was 1 successful test divided by the number of days.
P(2) represents the number of days that there were 2 successful tests divided by the number of days.
etc.
As an example: p(4) = 2/10 = 0.0 because there were 2 days which had 4 successful test and the
total number of days is 10.
