Question

3. For a sample of 15trees, the volume of lumber (y) (in cubic meters) and the...

3. For a sample of 15trees, the volume of lumber (y) (in cubic meters) and the diameter (x) (in centimeters) at a fixed height above ground level was measured. The following summary statistics were obtained:(10points)x̄= 35.2sx= 8.9ȳ= 0.78sy= 0.48r= 0.95a)Compute the least-squares regression line for predicting volume from diameter.b)Predict the volumefor a tree whose diameter is 42centimeters.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
18. Compute the least-squares regression line for predicting y from x given the following summary statistics:...
18. Compute the least-squares regression line for predicting y from x given the following summary statistics: x̄ = 8.1  sx = 1.2 ȳ = 30.4 sy = 1.9 r = −0.85 Please show your work.
(a) Write the regression model (please do not round coefficients): E[y]= ____ + ____ ?height +...
(a) Write the regression model (please do not round coefficients): E[y]= ____ + ____ ?height + ______ ?diameter (b) Keeping diameter constant, how much additional volume should we expect from an average tree if height is increased by 1 foot? Are each of the predictors, "height" and "diameter" significant predictors of volume? a.) Yes, since the p-values associated with each predictor are less than 0.05 b.) Only diameter is a significant predictor since it has the smallest p-value c.) No,...
In a study relating the degree of warping, in mm, of a copper plate (y) to...
In a study relating the degree of warping, in mm, of a copper plate (y) to temperature in °C (x), the following summary statistics were calculated: n=40,  x¯=26.36, y¯=0.5188,∑ni=1(xi−x¯)2=98,775, ∑ni=1(yi−y¯)2=19.55,∑ni=1(xi−x¯)(yi−y¯)=766.94. Compute the least-squares line for predicting warping from temperature. Round the answers to four decimal places. Predict the warping at a temperature of 40°C. Round the answer to three decimal places. At what temperature will we predict the warping to be 0.5 mm? Round the answer to two decimal places.
The scatterplot below summarizes husbands and wives heights in a random sample of 170 married couples...
The scatterplot below summarizes husbands and wives heights in a random sample of 170 married couples in Britain, where both partners' ages are below 65 years. Summary output of the least squares fit for predicting wife's height from husbands height is also provided in the table.            Estimate   Std error   T value       Pr(>|t) Intercept       43.5755       4.6842       9.30       0.0000 height-husband   0.2863       0.0686       4.17       0.0000 In this scenario what is the response...
1. Which of the settings does not allow use of a matched pairs T procedure? A)...
1. Which of the settings does not allow use of a matched pairs T procedure? A) You interview both the instructor and one of the students in each of 20 introductory statistics classes and ask each how many hours per week homework assignments require. B) None of the other options are correct. C) You interview a sample of 15 instructors and another 15 students and ask each how many hours per week homework assignments require. D) You interview 40 students...
1. For a pair of sample x- and y-values, what is the difference between the observed...
1. For a pair of sample x- and y-values, what is the difference between the observed value of y and the predicted value of y? a) An outlier b) The explanatory variable c) A residual d) The response variable 2. Which of the following statements is false: a) The correlation coefficient is unitless. b) A correlation coefficient of 0.62 suggests a stronger correlation than a correlation coefficient of -0.82. c) The correlation coefficient, r, is always between -1 and 1....
3. Consider the region R in the first quadrant enclosed by y = x, y =...
3. Consider the region R in the first quadrant enclosed by y = x, y = x/2, and y = 5. (a) Sketch this region, making sure to identify and label all points of intersection. (b) Find the area of R, using the method of your choice. (c) Using the method of your choice, set up an integral for the volume of the solid resulting from rotating R around the y-axis. Do NOT evaluate the integral. (d) Using the method...
#3 The authors of the paper "Weight-Bearing Activity during Youth Is a More Important Factor for...
#3 The authors of the paper "Weight-Bearing Activity during Youth Is a More Important Factor for Peak Bone Mass than Calcium Intake" studied a number of variables they thought might be related to bone mineral density (BMD). The accompanying data on x = weight at age 13 and y = bone mineral density at age 27 are consistent with summary quantities for women given in the paper. Weight (kg) BMD (g/cm2) 54.4 1.15 59.3 1.26 74.6 1.42 62.0 1.06 73.7...
The recommended air pressure in a basketball is between7and9pounds per square inch (psi). When dropped from...
The recommended air pressure in a basketball is between7and9pounds per square inch (psi). When dropped from a height of6feet, a properly inflated basketball should bounce upward between52and56inches (http://www.bestsoccerbuys.com/balls-basketball.html). The basketball coach at a local high school purchased10new basketballs for the upcoming season, inflated the balls to pressures between7and9psi, and performed the bounce test mentioned above. The data obtained are given in the following table. Pressure (psi) 8.1 8.0 8.4 7.2 8.7 7.5 8.7 7.5 8.1 8.5 Bounce height (inches) 54.1...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT