http://onlinestatbook.com/2/calculators/normal_dist.html
 
mean 100
 
SD 15
 
above 145
 
.0013 x 197,870,516 is 257, 232 (rounded up)
 
https://archive.li/JfaBt
 
103 is .0026 or so, that's the Bell Curve estimate
 
115 is awfully high, 112 is better. And not all Jews are ashkenazi https://en.wikipedia.org/wiki/American_Jews https://archive.li/k5SqX
 
90% are
 
so it is .0228 x 5,425,000 = 123,690
 
https://en.wikipedia.org/wiki/American_Jews#Demographics
https://archive.li/hSMbh
 
112 deflates it to 75,408 rounded up
 
And my pop estimates didnt take into account only 90% being ashkenazi. So multiply final results by .9 if you want