[hervature]

To be a pedant and assuming your confidence interval is at the 95% confidence level. Taking 73 checks will produce the 95% lower bound 95% of the time if you take any random 73 samples.

[jpalardy]

Right, in this specific case it's awkward to mention both 95% (confidence) and 95% (lower bound) in the same sentence.

It could have been clearer if I used different values.