Question: Random number generator - limited on positive numbers

Hello together, I want to generate 1000 random numbers. I know the function for normally distributed numbers: X1 := random[normald[mu[1], sigma[1]]] The problem is: 1. I want only positive numbers (but exactly 1000)... 2. I want to set a lower(mu minus 3*sigma and upper limit (mu plus 3*sigma) Thanks for your help!
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