Ms. Tina is the accountant in the Walton Industries. She believes that the current cash-flow problem at Walton is due to the slow collection of accounts receivable. She believes that more than 60 percent of the accounts are in arrears more than three months. A random sample of 200 accounts showed that 140 were more than three months old. At the 0.05 significance level, can she conclude that more than 60 percent of the accounts are in arrears for more than three months?

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