No, the cruise ship was a statistically insignificant sample. If you don’t know what that is, you may want to crack a book or two before spewing the bullshit ‘statistics’ you are breathlessly trying to pass on as fact.
I’ll reiterate, a wide serosurvey much be completed before the mortality is known. It is possible/likely that the number of affected is 10x or 100x the official number of confirmed cases. This would make the advertised death rate an order or two of magnitude less.
Forget it, you cannot educate the willfully ignorant, or perpetually self assured. As one of my medical school professors described a colleague of mine — often wrong, never in doubt...
The some 85,997 reported cases in China and the some 2,941 deaths are statistically significant numbers representing most of the cases to date. That works out to over 3%. Now sure, the deaths are probably are more reliable number than the reported cases number which could be a much higher number.
But all of this special pleading is damn bad science.