Question: The gram of solids removed from a material (y) is thought to be related to the drying time. Ten observations obtained from an experimental study

The gram of solids removed from a material (y) is thought to be related to the drying time. Ten observations obtained from an experimental study follow:
(a) Construct a scatter diagram for these data.
(b) Fit a simple linear regression model.
(c) Test for significance of regression.
(d) Based on these data, what is your estimate of the mean grams of solids removed at 4.25 hours? Find a 95% confidence interval on the mean.
(e) Analyze the residuals and comment on model adequacy.

1.8 | 4.9 | 4.2 x| 2.5 | .0| 3.5 | 4.0 | 4.5 | 4.8 | 5.8 | 6.2 | 7.0 | 5.0 | 5.5 | 6.0 | 6.5 | 7.0 7.9 y| 4.3 |

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