Comment by WalterBright

Thank you, but it's behind a paywall. I did find this:

https://www.nytimes.com/2019/09/18/magazine/boeing-737-max-c...

which has detailed information, but I don't trust the NYT. The article also erroneously reports that the MCAS trim rate is twice the speed of manual trim. The trim rate for both is 0.27 degrees per second.