Credit Losses Based on Accounts Receivable

Graham, Inc., analyzed its accounts receivable balances at December $31,$ and arrived at the aged balances listed below, along with the percentage that is estimated to be uncollectible:

$\backslash$table$[[$Age Group,Balance,$\backslash$table$[[$Probability of$],[$Noncollection$]]],[0-30$ days past due,$$150,000,1\%$