Find least squares regression line

The data below represents commute times (in minutes) and scores on a well-being survey. Complete parts (a) through (d) below. Commute time (in minutes), x  5, 20, 25, 40, 60, 84, 105 Well-being index score, y 69.1, 67.8, 67.1, 66.3, 66.0, 64.3, 62.3 Find the least-squares regression line treating the commute time, x, as the explanatory variable and the index score, y, as the response variable. y=___x + ____ (round to three decimal places as needed).

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Hi I need help with the second question "What is the best model using the​ t-statistic criteria? Select the best answer below and fill in the answer boxes to complete your choice." Please let me know what option to choose from A-G and what numbers to put in the boxes.

When a stone is dropped in a pond, ripples are formed and travel in concentric circles away from where the stone was dropped. The equation of the least-squares regression line is (picture attached)  What is the predicted area of the circle, in cm2, 4 seconds after the stone is dropped? 49.72 cm2 199.43 cm2 311.89 cm2 1854.10 cm2

If a regression model of the form y= B,+B,x,+... + B,x, is fit to 132 observations on each variable and yields an R´value of 0.87, fill in the blanks in the following ANOVA table. Do all calculations to at least three decimal places. Source of Degrees of freedom Sums of Mean F statistic variation squares squares Regression 69 Error Total

What is the​ least-squares regression line with the point (9,13) included in the data​ set?   Data Set    x      y 3   6   4   5   5   7   7   6   8   9   8   8   10   8   11   9   11   7   12   10   13   12   13   10   14   11     ​This is a reading assessment question.    .....   y hat = ______x + ______ ​Type integers or decimals rounded to 4 decimal places as​ needed