Statistics
13th Edition
ISBN: 9780135820100
Author: MCCLAVE, James T., Sincich, Terry
Publisher: PEARSON
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Chapter 9.3, Problem 54ACA
To determine
To test: Whether the winery have to go for an alternate method for the measurement.
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What were the average sales for the four weeks prior to the experiment?
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State the null hypothesis being tested by the paired sample t-test.
Do you reject or retain the null hypothesis?
At a 95% significance level, was the difference significant? Explain why or why not using the results from the paired sample t-test.
Should the manager of the retail chain install new digital displays in each store? Justify your answer.
A retail chain is interested in determining whether a digital video point-of-purchase (POP) display would stimulate higher sales for a brand advertised compared to the standard cardboard point-of-purchase display. To test this, a one-shot static group design experiment was conducted over a four-week period in 100 different stores. Fifty stores were randomly assigned to the control treatment (standard display) and the other 50 stores were randomly assigned to the experimental treatment (digital display). Compare the sales of the control group (standard POP) to the experimental group (digital POP).
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Question 4
An article in Quality Progress (May 2011, pp. 42-48) describes the use of factorial experiments to improve a
silver powder production process. This product is used in conductive pastes to manufacture a wide variety of
products ranging from silicon wafers to elastic membrane switches. Powder density (g/cm²) and surface area
(cm/g) are the two critical characteristics of this product. The experiments involved three factors: reaction
temperature, ammonium percentage, stirring rate. Each of these factors had two levels, and the design was
replicated twice. The design is shown in Table 3.
A222222222222233
Stir Rate
(RPM)
Ammonium
(%)
Table 3: Silver Powder Experiment from Exercise 13.23
Temperature
(°C)
Density
Surface Area
100
8
14.68
0.40
100
8
15.18
0.43
30
100
8
15.12
0.42
30
100
17.48
0.41
150
7.54
0.69
150
8
6.66
0.67
30
150
8
12.46
0.52
30
150
8
12.62
0.36
100
40
10.95
0.58
100
40
17.68
0.43
30
100
40
12.65
0.57
30
100
40
15.96
0.54
150
40
8.03
0.68
150
40
8.84
0.75
30
150…
Chapter 9 Solutions
Statistics
Ch. 9.2 - Describe the sampling distribution of when the...Ch. 9.2 - 8.4 To use the t-statistic to test for a...Ch. 9.2 - Prob. 3UPCh. 9.2 - Prob. 4UPCh. 9.2 - A confidence interval for is (–10, –4). Which of...Ch. 9.2 - 8.3 In order to compare the means of two...Ch. 9.2 - Independent random samples of 100 observations...Ch. 9.2 - Assume that . Calculate the pooled estimator of ...Ch. 9.2 - 8.7 Independent random samples from normal...Ch. 9.2 - Two independent random samples have been selected,...
Ch. 9.2 - 8.9 Independent random samples of n1 = 233 and n2...Ch. 9.2 - 8.11 Independent random samples selected from two...Ch. 9.2 - 8.14 Shared leadership in airplane crews. Human...Ch. 9.2 - 8.13 Last name and acquisition timing. The speed...Ch. 9.2 - Effectiveness of teaching software. The U.S....Ch. 9.2 - Cognitive impairment of schizophrenics. A study of...Ch. 9.2 - Children’s recall of TV ads. Children’s recall and...Ch. 9.2 - Comparing taste test rating protocols. Taste...Ch. 9.2 - Bulimia study. The “fear of negative evaluation”...Ch. 9.2 - 8.12 Lobster trap placement. Refer to the Bulletin...Ch. 9.2 - Shopping vehicle and judgment. Refer to the...Ch. 9.2 - Do video game players have superior visual...Ch. 9.2 - 8.16 Drug content assessment. Refer to Exercise...Ch. 9.2 - Hygiene of handshakes, high five and fist bumps....Ch. 9.2 - How do you choose to argue? In Thinking and...Ch. 9.2 - 8.21 Does rudeness really matter in the workplace?...Ch. 9.2 - Prob. 27ACICh. 9.2 - 8.22 Service without a smile. “Service with a...Ch. 9.2 - Prob. 29ACACh. 9.2 - Prob. 30ACACh. 9.3 - In a paired difference experiment, when should the...Ch. 9.3 - What are the advantages of using a paired...Ch. 9.3 - True or False. In a paired difference...Ch. 9.3 - What conditions are required for valid...Ch. 9.3 - A paired difference experiment yielded nd pairs of...Ch. 9.3 - A paired difference experiment produced the...Ch. 9.3 - 8.28 The data for a random sample of six paired...Ch. 9.3 - 8 29 The data for a random sample of 10 paired...Ch. 9.3 - A paired difference experiment yielded the...Ch. 9.3 - 8.31 Summer weight-loss camp. Camp Jump Start is...Ch. 9.3 - 8.34 Packaging of a children’s health food. Refer...Ch. 9.3 - 8.33 Twinned drill holes. A traditional method of...Ch. 9.3 - Healing potential of handling museum objects. Does...Ch. 9.3 - Laughter among deaf signers. The Journal of Deaf...Ch. 9.3 - Prob. 45ACBCh. 9.3 - Settlement of shallow foundations. Structures...Ch. 9.3 - 8.39 Solar energy generation along highways. The...Ch. 9.3 - Estimating well scale deposits. Scale deposits can...Ch. 9.3 - 8.38 Acidity of mouthwash. Acid has been found to...Ch. 9.3 - Prob. 50ACICh. 9.3 - Prob. 51ACICh. 9.3 - Prob. 52ACICh. 9.3 - Prob. 53ACICh. 9.3 - Prob. 54ACACh. 9.4 - What conditions are required for valid...Ch. 9.4 - Prob. 56UPCh. 9.4 - Prob. 57UPCh. 9.4 - Prob. 58LMCh. 9.4 - Prob. 59LMCh. 9.4 - Independent random samples, each containing 800...Ch. 9.4 - Prob. 61LMCh. 9.4 - Prob. 62LMCh. 9.4 - Prob. 63ACBCh. 9.4 - 8.104 Is steak your favorite barbeque food? July...Ch. 9.4 - Prob. 65ACBCh. 9.4 - Influencing performance in a serial addition task....Ch. 9.4 - Web survey response rates. Response rates to Web...Ch. 9.4 - Planning-habits survey. American Demographics...Ch. 9.4 - 8.55 Salmonella in produce. Salmonella infection...Ch. 9.4 - Prob. 70ACICh. 9.4 - 8.54 Traffic sign maintenance. The Federal Highway...Ch. 9.4 - Prob. 72ACICh. 9.4 - Prob. 73ACICh. 9.4 - Prob. 74ACICh. 9.4 - Prob. 75ACICh. 9.4 - Religious symbolism in TV commercials. Gonzaga...Ch. 9.4 - Prob. 77ACACh. 9.5 - In determining the sample sizes for estimating μ1...Ch. 9.5 - Prob. 79UPCh. 9.5 - Prob. 80UPCh. 9.5 - Prob. 81LMCh. 9.5 - Prob. 82LMCh. 9.5 - Prob. 83LMCh. 9.5 - Prob. 84LMCh. 9.5 - Prob. 85ACBCh. 9.5 - Prob. 86ACBCh. 9.5 - Prob. 87ACBCh. 9.5 - Prob. 88ACBCh. 9.5 - Prob. 89ACBCh. 9.5 - Prob. 90ACICh. 9.5 - Prob. 91ACICh. 9.5 - Cable-TV home shoppers. All cable television...Ch. 9.5 - Prob. 93ACICh. 9.5 - Prob. 94ACICh. 9.5 - Prob. 95ACICh. 9.6 - Describe the sampling distribution of (s1)2/(s2)2...Ch. 9.6 - Prob. 97UPCh. 9.6 - Prob. 98UPCh. 9.6 - Prob. 99UPCh. 9.6 - Prob. 100LMCh. 9.6 - Prob. 101LMCh. 9.6 - Prob. 102LMCh. 9.6 - Prob. 103LMCh. 9.6 - 8.77 Specify the appropriate rejection region for...Ch. 9.6 - Prob. 105LMCh. 9.6 - Prob. 106LMCh. 9.6 - Prob. 107ACBCh. 9.6 - Prob. 108ACBCh. 9.6 - Prob. 109ACBCh. 9.6 - Bulimia study. Refer to Exercise 9.19 (p. 449)....Ch. 9.6 - Prob. 111ACBCh. 9.6 - Hygiene of handshakes, high fives, and fist bumps....Ch. 9.6 - Prob. 113ACICh. 9.6 - Prob. 114ACICh. 9.6 - Prob. 115ACICh. 9.6 - Prob. 116ACICh. 9.6 - Prob. 117ACICh. 9 - Prob. 118UPCh. 9 - Prob. 119UPCh. 9 - 8.90 Two independent random samples were selected...Ch. 9 - 8.91 Independent random samples were selected from...Ch. 9 - 8.92 Independent random samples were selected from...Ch. 9 - Prob. 123LMCh. 9 - Prob. 124LMCh. 9 - Prob. 125ACBCh. 9 - 8.101 NHTSA new car crash tests. Refer to the...Ch. 9 - Prob. 127ACBCh. 9 - Prob. 128ACBCh. 9 - Prob. 129ACBCh. 9 - Prob. 130ACBCh. 9 - Prob. 131ACBCh. 9 - Prob. 132ACBCh. 9 - Prob. 133ACBCh. 9 - Prob. 134ACBCh. 9 - Prob. 135ACBCh. 9 - Prob. 136ACBCh. 9 - Prob. 137ACICh. 9 - Prob. 138ACICh. 9 - Prob. 139ACICh. 9 - Prob. 140ACICh. 9 - Prob. 141ACICh. 9 - Prob. 142ACICh. 9 - Prob. 143ACICh. 9 - Prob. 144ACICh. 9 - Prob. 145ACICh. 9 - Prob. 146ACICh. 9 - Prob. 147ACICh. 9 - Prob. 148ACICh. 9 - Prob. 149ACACh. 9 - Prob. 150ACACh. 9 - Prob. 151CTCCh. 9 - Detection of rigged school milk prices. Each year,...
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