Equation of the regression line
What is the value of y' when x = 3, if the equation of the regression line is y' = 23.1 - 3.8x ?
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A ball is thrown straight up in the air with a velocity of 40 m/s. What is the speed of the ball right before it hits the ground? (neglecting air resistance) How long will the ball be in the air?
a) calculate the upward force on the larger piston due to a downward force of 30N on the smaller one.
What is the minimum carbon concentration (in atome percent) that will cause the alloy to impde the motion of all dislocations?
What are the appropriate null and alternative hypotheses for this analysis? Using ?=0.05, what is your conclusion about the equality of population means all four coupons?
A multiple regression line was calculated in which x1 was a student's grade point average and x2 was a student's age. The multiple regression line was calculated as y' = -18.7 + 46.3 x1 + 7.28 x2. If a student has a grade point average of 5.9 and
Compute the standard error of the estimate for the data below.
Test the significance of the correlation coefficient r at a = 0.05 for the data below.
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