Student Solutions Manual for Basic Business Statistics
13th Edition
ISBN: 9780321926708
Author: David M. Levine; Mark L. Berenson; Timothy C. Krehbiel; Kathryn A. Szabat; David F. Stephan
Publisher: Pearson Education
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Chapter 19, Problem 13PS
a.
To determine
Make a C-chart for the number of items per day that are returned for rework and determine whether the process is in state of control.
b.
To determine
Determine whether the owner should take an action on 12 items returned on day 12, and also determine the owner action when the 20 items were returned on day 12.
c.
To determine
Determine the actions that owner needs to take in order to reduce the number of items returned per day for rework.
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Question 2
Parts manufactured by an injection molding process are subjected to a compressive strength test. Twenty samples
of five parts each are collected, and the compressive strengths (in psi) are shown in Table 2.
Table 2: Strength Data for Question 2
Sample Number
x1
x2
23
x4
x5
R
1
83.0
2
88.6 78.3 78.8
3
85.7
75.8
84.3
81.2 78.7 75.7 77.0
71.0 84.2
81.0
79.1
7.3
80.2 17.6
75.2
80.4
10.4
4
80.8
74.4
82.5
74.1 75.7 77.5
8.4
5
83.4
78.4
82.6 78.2
78.9
80.3
5.2
File Preview
6
75.3
79.9
87.3 89.7
81.8
82.8
14.5
7
74.5
78.0 80.8
73.4
79.7
77.3
7.4
8
79.2
84.4 81.5 86.0
74.5
81.1
11.4
9
80.5
86.2
76.2 64.1
80.2
81.4
9.9
10
75.7
75.2
71.1 82.1
74.3
75.7
10.9
11
80.0 81.5
78.4 73.8
78.1
78.4
7.7
12
80.6
81.8
79.3
73.8
81.7 79.4
8.0
13
82.7
81.3
79.1
82.0 79.5 80.9
3.6
14
79.2
74.9
78.6 77.7
75.3
77.1
4.3
15
85.5 82.1
82.8 73.4
71.7
79.1
13.8
16
78.8 79.6
80.2 79.1
80.8 79.7
2.0
17
82.1
78.2
18
84.5
76.9
75.5
83.5 81.2
19
79.0 77.8
20
84.5
73.1
78.2 82.1
79.2 81.1 7.6
81.2 84.4 81.6 80.8…
Name:
Lab Time:
Quiz 7 & 8 (Take Home) - due Wednesday, Feb. 26
Contingency Analysis (Ch. 9)
In lab 5, part 3, you will create a mosaic plot and conducted a chi-square contingency test to
evaluate whether elderly patients who did not stop walking to talk (vs. those who did stop)
were more likely to suffer a fall in the next six months. I have tabulated the data below.
Answer the questions below. Please show your calculations on this or a separate sheet.
Did not stop walking to talk
Stopped walking to talk Totals
Suffered a fall
Did not suffer a fall
Totals
12
11
23
2
35
37
14
14
46
60
Quiz 7:
1. (2 pts) Compute the odds of falling for each group. Compute the odds ratio for those
who did not stop walking vs. those who did stop walking. Interpret your result verbally.
Solve please and thank you!
Chapter 19 Solutions
Student Solutions Manual for Basic Business Statistics
Ch. 19 - Prob. 1PSCh. 19 - Prob. 2PSCh. 19 - Prob. 3PSCh. 19 - Prob. 4PSCh. 19 - Prob. 5PSCh. 19 - Prob. 6PSCh. 19 - Prob. 7PSCh. 19 - Prob. 8PSCh. 19 - Prob. 9PSCh. 19 - Prob. 11PS
Ch. 19 - Prob. 12PSCh. 19 - Prob. 13PSCh. 19 - Prob. 14PSCh. 19 - Prob. 15PSCh. 19 - Prob. 16PSCh. 19 - Prob. 17PSCh. 19 - Prob. 18PSCh. 19 - Prob. 19PSCh. 19 - Prob. 20PSCh. 19 - Prob. 21PSCh. 19 - The manager of a branch of a local bank has the...Ch. 19 - Prob. 23PSCh. 19 - Prob. 24PSCh. 19 - The data in Tensile represent the tensile...Ch. 19 - Prob. 26PSCh. 19 - Prob. 27PSCh. 19 - A manufacturing company makes brackets for book...Ch. 19 - Prob. 29PSCh. 19 - Prob. 30PSCh. 19 - Prob. 31PSCh. 19 - Prob. 32PSCh. 19 - Prob. 33PSCh. 19 - Prob. 34PSCh. 19 - Refer to Problem 19.22 concerning waiting time for...Ch. 19 - Prob. 36PSCh. 19 - Prob. 37PSCh. 19 - Prob. 38PSCh. 19 - Prob. 39PSCh. 19 - What is the difference between attribute control...Ch. 19 - Prob. 41PSCh. 19 - Prob. 42PSCh. 19 - Prob. 43PSCh. 19 - Prob. 44PSCh. 19 - Prob. 45PSCh. 19 - Prob. 46PSCh. 19 - Suppose that you have been hired as a summer...Ch. 19 - Prob. 48PSCh. 19 - Prob. 49PSCh. 19 - Prob. 50PSCh. 19 - Prob. 51PSCh. 19 - Prob. 52PSCh. 19 - Prob. 53PSCh. 19 - Prob. 54PSCh. 19 - Prob. 55PS
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- 7. In a 2011 article, M. Radelet and G. Pierce reported a logistic prediction equation for the death penalty verdicts in North Carolina. Let Y denote whether a subject convicted of murder received the death penalty (1=yes), for the defendant's race h (h1, black; h = 2, white), victim's race i (i = 1, black; i = 2, white), and number of additional factors j (j = 0, 1, 2). For the model logit[P(Y = 1)] = a + ß₁₂ + By + B²², they reported = -5.26, D â BD = 0, BD = 0.17, BY = 0, BY = 0.91, B = 0, B = 2.02, B = 3.98. (a) Estimate the probability of receiving the death penalty for the group most likely to receive it. [4 pts] (b) If, instead, parameters used constraints 3D = BY = 35 = 0, report the esti- mates. [3 pts] h (c) If, instead, parameters used constraints Σ₁ = Σ₁ BY = Σ; B = 0, report the estimates. [3 pts] Hint the probabilities, odds and odds ratios do not change with constraints.arrow_forwardSolve please and thank you!arrow_forwardSolve please and thank you!arrow_forward
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- Suppose that you collect data on 10 products and check their weights. The average should be 10 ounces, but your sample mean is 9 ounces with standard deviation 2 ounces. Find the standard score.What percentile is the standard score found in part a of this question closest to?Suppose that the mean really is 10 ounces. Do you find these results unusual? Use probabilities to explain.arrow_forwardSuppose that you want to sample expensive computer chips, but you can have only n=3 of them. Should you continue the experiment?arrow_forwardSuppose that studies claim that 40 percent of cellphone owners use their phones in the car while driving. What’s the chance that more than 425 out of a random sample of 1,000 cellphone owners say they use their phones while driving?arrow_forward
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