The computer-generated balance for timothy jones is listed


Q 1 )

During the recession that began in 2008, not only did some people stop making house payments, but they also stopped making payments for local government services such as trash collection and water and sewer services. The following data have been collected by an accountant who is performing an audit of account balances for a major city billing department. The population from which the data were collected represents those accounts for which the customer had indicated the balance was incorrect. The dependent variable, y, is the actual account balance as verified by the accountant. The independent variable, x, is the computer-generated account balance.

X

233

10

24

56

78

102

90

200

344

120

18


Y

245

12

22

56

90

103

85

190

320

120

23


Compute the least squares regression equation

b. If the computer-generated account balance was 100, what would you expect to be the actual account balance as verified by the accountant?

c. The computer-generated balance for Timothy Jones is listed as 100 in the computer-generated account record. Calculate a 90% interval estimate for Mr. Jones's actual account balance.

d. Calculate also a 90% interval estimate for the average of all customers' actual account balances in which a computer-generated account balance is the same as that of Mr. Jones (part c). Interpret your results.

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Mathematics: The computer-generated balance for timothy jones is listed
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