Question

The following data represents the sap production for trees of various ages. use the data to answer the questions that follow: Tree Age (years) Sap Production (in mL) 7| 200 ,50| 350 10| 370 17| 380, 35| 480, 8 280 27 420 40 430 12 320 45 360 22 480 42 390 30 430 37 450 a. Create a scatterplot of the above data using age as the explanatory variable. Describe the relationship you see based on the scatterplot b. determine the linear regression equation for the data c. determine the correlation coefficient for the data d. Interpret the slope of the equation in context of the problem e. Interpret the y-intercept of the equation in context of the problem. Is this interpretation appropriate? f. Use the regression equation to approximate the sap production of a tree that is 45 years old. How does this value compare the collected data.

Answer #1

Calories
Carbs
780
55
420
34
520
45
290
33
600
47
480
35
290
30
290
35
230
30
680
45
420
35
560
53
740
42
400
40
250
31
230
24
240
32
370
33
450
47
790
56
520
41
640
42
530
57
410
45
330
32
460
27
920
53
180
11
280
16
350
39
380
37
470
45
610
58
400
44
370
40
620
67
580
67
310
30
420
47...

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Month Price in $ per Million Btu
1 8.38
2 7.99
3 7.73
4 8.20
5 8.73
6 8.99
7 9.25
8 9.30
9 10.65
10 8.19
11 8.69
12 9.69
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The following data is representative of that reported in an
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x
100
125
125
150
150
200
200
250
250
300
300
350
400
400
y
160
140
190
210
190
320
280
390
420
440
400
590
620
670
(a) Does the simple linear regression model specify a
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b0 = -10 b1
= 4.5 b2 = -6.0
a. Write the
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Researchers in a 2015 study by Flannery et al. sought to
estimate the effectiveness of the seasonal influenza vaccine in
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Click to download the data in your preferred format.
CrunchIt! CSV Excel
JMP Mac-Text Minitab
PC-Text R ...

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