To generate a standard normal distribution you can use =NORMSINV(RAND()).
If you need a normal distribution with a mean of 7 and a standard deviation of 10 then use =NORMINV(RAND(),7,10).
But: Your normal distribution will not show a mean of exactly 7 (and a standard deviation of exactly 10) unless the number of draws approaches infinity. If you want to ensure a mean of 7 and a standard deviation of 10 then shift an originally generated series of random numbers to this mean and zoom it to the required standard deviation:
