The mean of a set of normally distributed data is 600 with a standard devastation of 20. what percent of data is between 580 and 620

15/16 as a decimal rounded to the nearest hundredth

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?

Answer! if you don’t mind, can you explain