People in the aerospace industry believe the cost of a space project is a function of the mass of the major object being sent into space. Use the following data to develop a regression model to predict the cost of a space project by the mass of the space object. Determine r2 and se.
Weight (tons) |
Cost ($ millions) |
---|---|
1.897 |
$ 53.6 |
3.019 |
184.5 |
0.453 |
6.4 |
0.987 |
23.5 |
1.058 |
33.5 |
2.100 |
110.4 |
2.408 |
104.6 |
The excel regression output for this problem is:
Hence,
=
-35.6335 + 67.5013 x
r2 = 0.958
se = 15.619
People in the aerospace industry believe the cost of a space project is a function of...
People in the aerospace industry believe the cost of a space project is a function of the mass of the major object being sent into space. Use the following data to develop a regression model to predict the cost of a space project by the mass of the space object. Determine r2 and se. Weight (tons) Cost ($ millions) 1.897 $ 53.6 3.019 184.6 0.453 6.4 0.996 23.5 1.058 32.9 2.100 110.4 2.385 104.6 ŷ = enter a number rounded...
A.) Construct an appropriate interval estimate of the mean cost
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Interpret the practical meaning of this interval estimate, in plain
English.
B.) Construct an appropriate interval estimate of the cost of a
single space project when the weight of the object
being sent into space is 1.5 tons, with 95% confidence. Interpret
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please answer both and show work!
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