Okay. Thanks for your explanation, but based on the numbers you provided, that 5% error would have to be based on faith, and not on mathematical probability functions in terms of proving accuracy or infallibility.
Why? It seems pretty clear not only from Ehrman, but from other (even Christian) scholars that many books of the New Testament were not written by the authors attributed to them. This is especially true of the apostle Paul. I accept the fact that many (if not most) conservative Christians rely on their faith when accepting the claim of infallibility for Christian doctrine. I did that for many years when I was a Southern Baptist. However, it wasn't until I began to read more about Jewish beliefs and Jewish history that the New Testament began to unravel. When viewed from a Jewish perspective, I understand why the Jews never accepted Christ as the messiah. Christians use Old Testament prophecy as support for their claim that Jesus is the promised messiah, but they conveniently ignore prophecies that were not fulfilled - prophecies that, for the Jews, were the key events that would preceed or announce the messiah's arrival.
In summary, between the forgeries, the scriptural errors, and the cherry picking of prophecy to prove a point, I find Bible inerrancy to be a theological rabbit hole, or at best circular logic.
Now having said that, I don't believe we should through the baby Jesus out with the baptismal water. The Bible is still a useful tool for spiritual guidance and solace, just as are many other forms of scripture such as the Bhgavad Gita, the Pali Canon, or the Hindu Vedas.
But that's just my view...