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Question: in a certain bank there are 15000 deposit accounts a...

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In a certain bank, there are 15000 deposit accounts. A simple random sample of 50 accounts was drawn. Let y denote the amount in a deposit account. The following data were obtained from the sample: 50 50 2 400, 000 and v 3, 650, 000, 000 i-1 0) Give an unbiased estimate of the average amount in a deposit account (ii) Give 95% confidence limits for the total amount in deposit accounts. (iii) If the true total amount in deposit accounts is 110, 000, 000, comment on the validity of estimation.

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