The design life of a planned municipal water-distribution system is to end in 2050, and the population in the town has been measured every 10 years since 1930 by the US Census Bureau. The reported populations are given below. Year Population 1930 25521 1940 30208 1950 30721 1960 37253 1970 38302 1980 41983 1990 56451 2000 64109

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1. The design life of a planned municipal water-distribution system is to end in 2050, and the
population in the town has been measured every 10 years since 1930 by the US Census Bureau.
The reported populations are given below.
Year
Population
1930
25521
1940
30208
1950
30721
1960
37253
1970
38302
1980
41983
1990
56451
2000
64109
Transcribed Image Text:1. The design life of a planned municipal water-distribution system is to end in 2050, and the population in the town has been measured every 10 years since 1930 by the US Census Bureau. The reported populations are given below. Year Population 1930 25521 1940 30208 1950 30721 1960 37253 1970 38302 1980 41983 1990 56451 2000 64109
c) Plot the population-time curves for each of the assumed scenarios (at least 200 years after first
record)
Note: Use the Excel Solver and least-squares method to perform the regression.
The coefficient of determination is given by:
R2 = 1 -
where n is the number of data points, y¡ is the recorded dependent-variable value for record i, y
the predicted dependent-variable value for record i, and ỹ is the average of the n recorded depended-
variable values.
Transcribed Image Text:c) Plot the population-time curves for each of the assumed scenarios (at least 200 years after first record) Note: Use the Excel Solver and least-squares method to perform the regression. The coefficient of determination is given by: R2 = 1 - where n is the number of data points, y¡ is the recorded dependent-variable value for record i, y the predicted dependent-variable value for record i, and ỹ is the average of the n recorded depended- variable values.
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