Question on Quant "Central Limit Theorem"

CFA Level I
#1

Could any of you help to explain for me? I dont understand how they calculate the “overall average sample means and standard errors” of continous population: In reading 10 (line 4, page 485), how can they get the number of $49.92 (average sample means) and $2.80 (standard error) many thanks

#2

i think its just the mean and SE of that particular monte carlo simulation

#3

thanks, lzen5.

#4

they havent stated the actual population /samples hence theres no way you can compute these values.They’ve got the values , calculated the x and sd and then simply stated these final values.