B PLEASE!!
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
B PLEASE!!
Transcribed Image Text:Suppose samples of six different brands of diet or imitation margarine were analyzed to determine the level of physiologically active polyunsaturated fatty acids (PAPUFA, in percent), resulting in the data shown in the accompanying table.
Imperial
Parkay
Blue Bonnet
Chiffon
Mazola
Fleischmann's 18.1 17.2 18.8 18.4
USE SALT
(a) Test for differences among the true means for PAPUFA percentages among the different brands. Use α = 0.05.
Calculate the test statistic. (Round your answer to two decimal places.)
F = 69.77
Parkay and Blue Bonnet
Parkay and Chiffon
14.1 13.6 14.5 14.3
Use technology to find the P-value. (Round your answer to four decimal places.)
P-value = 0
Parkay and Mazola
12.8 12.5 13.5 13.0 12.3
What can you conclude?
O Fail to reject Ho. There is convincing evidence that the mean PAPUFA percentages for the six brands are not all equal.
O Reject Ho. There is not convincing evidence that the mean PAPUFA percentages for the six brands are not all equal.
O Fail to reject Ho. There is not convincing evidence that the mean PAPUFA percentages for the six brands are not all
equal.
● Reject Ho. There is convincing evidence that the mean PAPUFA percentages for the six brands are not all equal.
Parkay and Fleischmann's
13.5 13.4 14.1 14.5
(b) Use the T-K procedure to calculate 95% simultaneous confidence intervals for all differences between means. (Round your answers to three decimal places.)
Imperial and Parkay
2.481
× )
Imperial and Blue Bonnet
Imperial and Chiffon
Imperial and Mazola
Blue Bonnet and Chiffon
13.2 12.7 12.6 14
Imperial and Fleischmann's
Blue Bonnet and Mazola
16.8 17.3 16.4 17.3 18.0
Chiffon and Mazola
Chiffon and Fleischmann's
Mazola and Fleischmann's
Blue Bonnet and Fleischmann's
0.129
W
W
W
W
W
W
W
W
W
W
W
-3.735
-2.141
X
X X X X X X
X
X X
X
X
I
, W
I
I
I
I
I
I
I
I
I
W
I
WWW
W
W
W
W
, W
W
W
W
-6.215
0.211
× )
× )
X
X
X
X
1x )
× )
× )
× )
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