Is the normality requirement satisifed for the test? Explain b) At the 2% of significnace, does the p-value support the claim that the dry desnity of OSB is different to that of plywood?
Is the normality requirement satisifed for the test? Explain b) At the 2% of significnace, does the p-value support the claim that the dry desnity of OSB is different to that of plywood?
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
a) Is the normality requirement satisifed for the test? Explain
b) At the 2% of significnace, does the p-value support the claim that the dry desnity of OSB is different to that of plywood?
c) What is the p-value associared with the test?

Transcribed Image Text:Tests of Normality
Kolmogorov-Smirnov"
Shapiro-Wilk
Wood Type
Statistic
df
Sig.
Statistic
df
Sig.
Dry_Density Plywood
.187
12
.200
.944
12
.547
OSB
.258
14
.012
.922
14
.235
*. This is a lower bound of the true significance.
a. Lilliefors Significance Correction

Transcribed Image Text:Independent Samples Test
Levene's Test for Equality of
Variances
t-test for Equality of Means
95% Confidence Interval of the
Difference
Mean
Std. Error
Sig.
df
Sig. (2-tailed)
Difference
Difference
Lower
Upper
Dry_Density
Equal variances
4.356
.048
-4.721
24
.000
-16.57024
3.50981
-23.81413
-9.32634
assumed
Equal variances not
assumed
-4.891
22.087
.000
-16.57024
3.38814
-23.59520
-9.54528
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