Calculus for Business, Economics, Life Sciences, and Social Sciences (13th Edition)
13th Edition
ISBN: 9780321869838
Author: Raymond A. Barnett, Michael R. Ziegler, Karl E. Byleen
Publisher: PEARSON
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Textbook Question
Chapter B.3, Problem 4MP
Use the binomial theorem to find the fourth term in the expansion of (x – 2)20.
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4. (5 pts) Conduct a chi-square contingency test (test of independence) to assess whether
there is an association between the behavior of the elderly person (did not stop to talk,
did stop to talk) and their likelihood of falling. Below, please state your null and
alternative hypotheses, calculate your expected values and write them in the table,
compute the test statistic, test the null by comparing your test statistic to the critical
value in Table A (p. 713-714) of your textbook and/or estimating the P-value, and
provide your conclusions in written form. Make sure to show your work.
Did not stop walking to talk
Stopped walking to talk
Suffered a fall
12
11
Totals
23
Did not suffer a fall | 2
Totals
35
37
14
46
60
T
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.
Chapter B.3 Solutions
Calculus for Business, Economics, Life Sciences, and Social Sciences (13th Edition)
Ch. B.3 - Evaluate. (A)4! (B)7!6! (C)8!5!Ch. B.3 - Find (A)5C2 (B)6C0Ch. B.3 - Use the binomial theorem to expand (x + 2)5.Ch. B.3 - Use the binomial theorem to find the fourth term...Ch. B.3 - In Problems 120, evaluate each expression. 1.6!Ch. B.3 - In Problems 120, evaluate each expression. 2.7!Ch. B.3 - In Problems 120, evaluate each expression. 3.10!9!Ch. B.3 - In Problems 120, evaluate each expression....Ch. B.3 - In Problems 120, evaluate each expression. 5.12!9!Ch. B.3 - In Problems 120, evaluate each expression. 6.10!6!
Ch. B.3 - Prob. 7ECh. B.3 - In Problems 120, evaluate each expression....Ch. B.3 - Prob. 9ECh. B.3 - In Problems 120, evaluate each expression....Ch. B.3 - In Problems 120, evaluate each expression....Ch. B.3 - Prob. 12ECh. B.3 - Prob. 13ECh. B.3 - In Problems 120, evaluate each expression. 14.7C3Ch. B.3 - In Problems 120, evaluate each expression. 15.6C5Ch. B.3 - Prob. 16ECh. B.3 - In Problems 120, evaluate each expression. 17.5C0Ch. B.3 - In Problems 120, evaluate each expression. 18.5C5Ch. B.3 - In Problems 120, evaluate each expression....Ch. B.3 - Prob. 20ECh. B.3 - Expand each expression in Problems 2126 using the...Ch. B.3 - Expand each expression in Problems 2126 using the...Ch. B.3 - Expand each expression in Problems 2126 using the...Ch. B.3 - Expand each expression in Problems 2126 using the...Ch. B.3 - Expand each expression in Problems 2126 using the...Ch. B.3 - Expand each expression in Problems 2126 using the...Ch. B.3 - Find the indicated term in each expansion in...Ch. B.3 - Prob. 28ECh. B.3 - Find the indicated term in each expansion in...Ch. B.3 - Find the indicated term in each expansion in...Ch. B.3 - Find the indicated term in each expansion in...Ch. B.3 - Prob. 32ECh. B.3 - Show that nC0 = nCn for n 0.Ch. B.3 - Prob. 34ECh. B.3 - The triangle shown here is called Pascals...Ch. B.3 - Explain why the sum of the entries in each row of...Ch. B.3 - Explain why the alternating sum of the entries in...Ch. B.3 - Prob. 38ECh. B.3 - Show that nCr1+nCr=n+1Cr for n r 1.
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