Mathematics, 04.10.2020 05:01 brittanyelliott028
4.29 Predicting tree height. Measuring tree height is not an easy task. How well does trunk diameter predict tree height? A survey of 958 live trees in an old-growth forest in Canada provides us with the following information: The mean tree height is 15.6 meters (m), with standard deviation 13.4 m; the mean diameter, measured at “breast height” (1.3 m above ground), is 23.4 centimeters (cm), and the standard deviation is 23.5 cm. The correlation between the height and the diameter is very high:
r
=
0.96
.17
What are the slope and intercept of the regression line to predict tree height from trunk diameter? Draw a graph of this regression line.
The tree diameters ranged from 1 to 101 cm. Predict the height of a tree in this area that is 50 cm in diameter at breast height. Use
r
2
to assess the reliability of this prediction. Please make an animated graph. Thank you
Answers: 2
Mathematics, 21.06.2019 17:30
If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)
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Mathematics, 21.06.2019 17:40
Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882
Answers: 1
Mathematics, 21.06.2019 19:00
Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.
Answers: 1
4.29 Predicting tree height. Measuring tree height is not an easy task. How well does trunk diameter...
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