Description
Exercises marked with PO Required require the use of Statistix 10.0 software.
The files required to solve for PO using SX: https://wetransfer.com/
Orange Juice Problems (OJUICE data)
11.26 a, b, c (632) // PO Required: SLR result
11.42 a, b, c (639) // PO Required: OK to include SLR result from 11.26
11.54 (646) // PO Required: OK to include SLR result from 11.26
11.77 (656) // PO Required: OK to include SLR result from 11.26 AND correlation table
11.89 (664) // PO Required: NONE
Non-Orange Juice Problems
11.52 a, b, c (645) // PO Required: NONE
12.9 a, b, c, d (698) // PO Required: NONE
12.33 a, b, c, d, e (709) -- TEAMPERF data // PO Required: MLR result AND prediction/fitted interval result
12.38 a, b, c (714) // PO Required: NONE
Question 10: What is one thing that you plan to change about your study habits following our first exam? // PO Required: NONE
Submit a Word file (named HW2YourName) with your answers (include SX printouts where required).
Exercises marked with PO Required require the use of Statistix 10.0 software.
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Explanation & Answer
Hi, everything is done: here is the problem solutions with outputs and the zip file of outputs
Problem: 11.26:
Part A:
Output:
Statistix 10.0 (30-day Trial)
PM
OJUICE.sx, 10/15/2020, 1:01:50
Least Squares Linear Regression of SweetInde
Predictor
Variables
Constant
Pectin
Coefficient
6.25207
-2.311E-03
R²
Adjusted R²
AICc
PRESS
0.2286
0.1936
-68.670
1.1714
Std Error
0.23662
9.049E-04
T
26.42
-2.55
P
0.0000
0.0181
Mean Square Error (MSE)
Standard Deviation
0.04622
0.21500
Source
Regression
Residual
Total
DF
1
22
23
SS
0.30140
1.01693
1.31833
MS
0.30140
0.04622
F
6.52
P
0.0181
Lack of Fit
Pure Error
19
3
0.69193
0.32500
0.03642
0.10833
0.34
0.9424
Cases Included 24
Missing Cases 0
Hence, the least squares line for the data is, Sweetness Index = 6.25 -0.00231Pectin (ppm).
Part B: The value of represents the 0.0023 units decrease in sweetness Index with one unit
increase in Pectin (ppm).
Part C:
The regression line is Substitute 300 for Pectin in the regression equation.
Hence we have:
Sweetness Index = 6.25 -0.00231Pectin (ppm)
=6.25-(0.00231x300)
= 5.557
Problem: 11.42:
Output:
Statistix 10.0 (30-day Trial)
PM
OJUICE.sx, 10/15/2020, 1:01:50
Least Squares Linear Regression of ...