ELEMENTARY STATISTICS(LL)(FD)
3rd Edition
ISBN: 9781260707458
Author: Navidi
Publisher: MCGRAW-HILL CUSTOM PUBLISHING
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Chapter 14, Problem 5CQ
To determine
To explain:Whether to reject the hypothesis of no interaction or not.
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An engineer has set up a DOE (design-of-experiment) to test the wear of laminated materials and how it
depends on the glue and filler used. At each test condition, two experiments were run. The engineer collected
the data below. Calculate the main and interaction effects.
Glue Filler Result 1 Result 2
0.3 0.5
65
70
0.6 0.5
0.3 0.75
0.6 0.75 101
89
97
61
72
105
Calculate the test statistics.
SSclue number (rtol=0.01, atol=0.0001)
SSpiller number (rtol=0.01, atol=0.0001)
SSinteraction number (rtol=0.01, atol=0.0001)
Felue
number (rtol=0.01, atol=0.0001)
Friller number (rtol=0.01, atol=0.0001)
Finteraction number (rtol=0.01, atol=0.0001)
Calculate the p-value.
Pclue number (rtol=0.01, atol=0.0001)
PFiller number (rtol=0.01, atol=0.0001)
Pinteraction number (rtol=0.01, atol=0.0001)
Which are statistically significant at a 10% level? State your decisions.
O (a) Cannot Reject HO: Glue
O (b) Reject HO: Interaction
O (c) Cannot Reject HO: Interaction
O (d) Reject H0: Filler
O (e) Cannot Reject…
2. A researcher had rats engage in a lever-press task for either a small, medium, or larger reward. The number of
lever presses was the dependent variable. The data were as follows:
Reward Size
Small
Medium
Large
1
4
6
4
3
5
1
4
4
2
5
T = 13
SS = 2.75
T= 6
T= 20
SS = 9
SS = 2
EX2 = 165
a. Do the data indicate that reward size had a significant impact on lever-pressing? Use the hypothesis testing
steps & p = .05. Compute any necessary post-hoc tests.
b. Compute eta-squared to measure the effect size.
Lecture(8.1):
A research study was conducted that measured empathy after watching Sesame street for five days
in a row. The study was conducted twice. For Study A the researcher recruited 20 children and randomly assigned them into 2 groups, one group who watched Sesame street. and a second
group who did not watched Sesame street. Empathy was measured after 5 days. For study B the researcher decided to only recruit only 10 children who all watched Sesame street and this time
measued empathy before the first hour of Sesame street and again afte 5 days once the lasr hour
was watched. Which of these studies uses an independent sample and which uses a dependent
sample.?
Chapter 14 Solutions
ELEMENTARY STATISTICS(LL)(FD)
Ch. 14.1 - In Exercises 7 and 8, fill in each blank with the...Ch. 14.1 - Prob. 8ECh. 14.1 - Prob. 9ECh. 14.1 - Prob. 10ECh. 14.1 - Prob. 11ECh. 14.1 - Prob. 12ECh. 14.1 - In a one-way ANOVA, the following data were...Ch. 14.1 - In a one-way ANOVA, the following data were...Ch. 14.1 - Samples were drawn from three populations. The...Ch. 14.1 - Samples were drawn from three populations. The...
Ch. 14.1 - Pesticide danger: One of the factors that...Ch. 14.1 - Life-saving drug: Penicillin is produced by the...Ch. 14.1 - Pesticide danger: Using the data in Exercise 17,...Ch. 14.1 - Life-saving drug: Using the data in Exercise 18,...Ch. 14.1 - Artificial hips: Artificial hip joints consist of...Ch. 14.1 - Floods: Rapid drainage of floodwater is crucial to...Ch. 14.1 - Artificial hips: Using the data in Exercise 21,...Ch. 14.1 - Floods: Using the data in Exercise 22, perform the...Ch. 14.1 - Polluting power plants: Power plants can emit...Ch. 14.1 - Prob. 26ECh. 14.1 - Prob. 27ECh. 14.1 - Prob. 28ECh. 14.1 - Prob. 29ECh. 14.1 - Prob. 30ECh. 14.1 - Prob. 31ECh. 14.2 - Prob. 5ECh. 14.2 - Prob. 6ECh. 14.2 - Prob. 7ECh. 14.2 - Prob. 8ECh. 14.2 - In a two-way ANOVA, the P-value for interactions...Ch. 14.2 - Prob. 10ECh. 14.2 - Prob. 11ECh. 14.2 - Prob. 12ECh. 14.2 - Prob. 13ECh. 14.2 - Prob. 14ECh. 14.2 - Prob. 15ECh. 14.2 - Prob. 16ECh. 14.2 - Prob. 17ECh. 14.2 - Prob. 18ECh. 14.2 - Prob. 19ECh. 14.2 - Prob. 20ECh. 14.2 - Prob. 21ECh. 14.2 - Prob. 22ECh. 14.2 - Prob. 23ECh. 14.2 - Strong beams: The following table presents...Ch. 14.2 - Prob. 25ECh. 14.2 - Prob. 26ECh. 14.2 - Fruit yields: An agricultural scientist performed...Ch. 14.2 - Prob. 28ECh. 14.2 - Prob. 29ECh. 14 - Exercises 1-4 refer to the following data: At a...Ch. 14 - Prob. 2CQCh. 14 - Prob. 3CQCh. 14 - Prob. 4CQCh. 14 - Prob. 5CQCh. 14 - Prob. 6CQCh. 14 - Prob. 7CQCh. 14 - Prob. 8CQCh. 14 - Prob. 9CQCh. 14 - Prob. 10CQCh. 14 - Prob. 1RECh. 14 - Prob. 2RECh. 14 - Prob. 3RECh. 14 - Prob. 4RECh. 14 - Prob. 5RECh. 14 - Prob. 6RECh. 14 - Prob. 7RECh. 14 - Prob. 8RECh. 14 - Prob. 9RECh. 14 - Prob. 10RECh. 14 - Prob. 11RECh. 14 - Prob. 12RECh. 14 - Prob. 13RECh. 14 - Prob. 14RECh. 14 - Prob. 15RECh. 14 - Prob. 1WAICh. 14 - Prob. 2WAICh. 14 - Prob. 3WAICh. 14 - Prob. 4WAICh. 14 - Prob. 5WAICh. 14 - Prob. 1CSCh. 14 - Prob. 2CSCh. 14 - Prob. 3CSCh. 14 - Prob. 4CS
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