The Basic Practice of Statistics
8th Edition
ISBN: 9781319042578
Author: David S. Moore, William I. Notz, Michael A. Fligner
Publisher: W. H. Freeman
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Chapter 19, Problem 19.4TY
To determine
To find: The
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Compute the relative risk of falling for the two groups (did not stop walking vs. did stop). State/interpret your result verbally.
Microsoft Excel include formulas
Question 1
The data shown in Table 1 are and R values for 24 samples of size n = 5 taken from a process producing
bearings. The measurements are made on the inside diameter of the bearing, with only the last three decimals
recorded (i.e., 34.5 should be 0.50345).
Table 1: Bearing Diameter Data
Sample Number
I
R
Sample Number
I R
1
34.5
3
13
35.4
8
2
34.2
4
14
34.0
6
3
31.6
4
15
37.1
5
4
31.5
4
16
34.9
7
5
35.0
5
17
33.5
4
6
34.1
6
18
31.7
3
7
32.6
4
19
34.0
8
8
33.8
3
20
35.1
9
34.8
7
21
33.7
2
10
33.6
8
22
32.8
1
11
31.9
3
23
33.5
3
12
38.6 9
24
34.2
2
(a) Set up and R charts on this process. Does the process seem to be in statistical control? If necessary,
revise the trial control limits. [15 pts]
(b) If specifications on this diameter are 0.5030±0.0010, find the percentage of nonconforming bearings pro-
duced by this process. Assume that diameter is normally distributed. [10 pts]
1
Chapter 19 Solutions
The Basic Practice of Statistics
Ch. 19 - Prob. 19.1TYCh. 19 - Prob. 19.2TYCh. 19 - Prob. 19.3TYCh. 19 - Prob. 19.4TYCh. 19 - Prob. 19.5TYCh. 19 - Prob. 19.6TYCh. 19 - Prob. 19.7TYCh. 19 - Prob. 19.8TYCh. 19 - Prob. 19.9TYCh. 19 - Prob. 19.10TY
Ch. 19 - Prob. 19.11TYCh. 19 - Prob. 19.12TYCh. 19 - Prob. 19.13TYCh. 19 - Prob. 19.14TYCh. 19 - Prob. 19.15TYCh. 19 - Prob. 19.16TYCh. 19 - Prob. 19.17TYCh. 19 - Prob. 19.18TYCh. 19 - Prob. 19.19TYCh. 19 - Prob. 19.20TYCh. 19 - Prob. 19.21TYCh. 19 - Prob. 19.22TYCh. 19 - Prob. 19.23TYCh. 19 - Prob. 19.24TYCh. 19 - Prob. 19.25TYCh. 19 - Prob. 19.26TYCh. 19 - Prob. 19.27TYCh. 19 - Prob. 19.28TYCh. 19 - Prob. 19.29TYCh. 19 - Prob. 19.30TYCh. 19 - Prob. 19.31TYCh. 19 - Prob. 19.32TYCh. 19 - Prob. 19.33TYCh. 19 - Prob. 19.34TYCh. 19 - Prob. 19.35TYCh. 19 - Prob. 19.36TYCh. 19 - Prob. 19.37TYCh. 19 - Prob. 19.38TYCh. 19 - Prob. 19.39TYCh. 19 - Prob. 19.40TYCh. 19 - Prob. 19.41TYCh. 19 - Prob. 19.42TYCh. 19 - Prob. 19.43TYCh. 19 - Prob. 19.44TYCh. 19 - Prob. 19.45TYCh. 19 - Prob. 19.46TYCh. 19 - Prob. 19.47TYCh. 19 - Prob. 19.48TYCh. 19 - Prob. 19.49TYCh. 19 - Prob. 19.50SECh. 19 - Prob. 19.51SECh. 19 - Prob. 19.52SECh. 19 - Prob. 19.53SECh. 19 - Prob. 19.55SECh. 19 - Prob. 19.56SECh. 19 - Prob. 19.57SECh. 19 - Prob. 19.58SECh. 19 - Prob. 19.59SECh. 19 - Prob. 19.60SECh. 19 - Prob. 19.61SECh. 19 - Prob. 19.62SECh. 19 - Prob. 19.63SECh. 19 - Prob. 19.64SECh. 19 - Prob. 19.65SE
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