Essential Statistics
2nd Edition
ISBN: 9781259570643
Author: Navidi
Publisher: MCG
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Chapter 1, Problem 7CS
To determine
Find whether there is any large difference between percentage of people who had higher levels of exposure to particulate matter had wheeze symptoms and the percentage of people who had lower levels of exposure to particulate matter had wheeze symptoms.
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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
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
Chapter 1 Solutions
Essential Statistics
Ch. 1.1 - 1. A pollster wants to estimate the proportion of...Ch. 1.1 - Prob. 2CYUCh. 1.1 - 3. A radio talk-show host invites listeners to...Ch. 1.1 - 4. Every 10 years, the U.S. Census Bureau attempts...Ch. 1.1 - 5. A public health researcher is designing a study...Ch. 1.1 - 6. A college basketball team held a promotion at...Ch. 1.1 - Prob. 7ECh. 1.1 - In Exercises 7–12, fill in each blank with the...Ch. 1.1 - In Exercises 7–12, fill in each blank with the...Ch. 1.1 - In Exercises 7–12, fill in each blank with the...
Ch. 1.1 - In Exercises 7–12, fill in each blank with the...Ch. 1.1 - In Exercises 7–12, fill in each blank with the...Ch. 1.1 - In Exercises 13–16, determine whether the...Ch. 1.1 - In Exercises 13–16, determine whether the...Ch. 1.1 - In Exercises 13–16, determine whether the...Ch. 1.1 - In Exercises 13–16, determine whether the...Ch. 1.1 - Prob. 17ECh. 1.1 - In Exercises 17–20, determine whether the number...Ch. 1.1 - Prob. 19ECh. 1.1 - In Exercises 17–20, determine whether the number...Ch. 1.1 - Prob. 21ECh. 1.1 - Prob. 22ECh. 1.1 - Prob. 23ECh. 1.1 - Prob. 24ECh. 1.1 - Prob. 25ECh. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - In Exercises 25–36, identify the kind of sample...Ch. 1.1 - 39. You’re giving me a headache: A pharmaceutical...Ch. 1.1 - 40. Pay more for recreation? The director of the...Ch. 1.1 - Prob. 41ECh. 1.1 - 42. Quality control: Products come off an assembly...Ch. 1.1 - 43. On-site day care: A large company wants to...Ch. 1.1 - Prob. 44ECh. 1.1 - 45. Draw a sample: Imagine that you are asked to...Ch. 1.1 - Prob. 46ECh. 1.2 - 1. A pollster asks a group of six voters about...Ch. 1.2 - Prob. 2CYUCh. 1.2 - Prob. 3CYUCh. 1.2 - Prob. 4CYUCh. 1.2 - Prob. 5ECh. 1.2 - Prob. 6ECh. 1.2 - Prob. 7ECh. 1.2 - Prob. 8ECh. 1.2 - Prob. 9ECh. 1.2 - Prob. 10ECh. 1.2 - Prob. 11ECh. 1.2 - In Exercises 11–14, determine whether the...Ch. 1.2 - In Exercises 11–14, determine whether the...Ch. 1.2 - In Exercises 11–14, determine whether the...Ch. 1.2 - Prob. 15ECh. 1.2 - In Exercises 15–24, determine whether the data...Ch. 1.2 - Prob. 17ECh. 1.2 - In Exercises 15–24, determine whether the data...Ch. 1.2 - In Exercises 15–24, determine whether the data...Ch. 1.2 - In Exercises 15–24, determine whether the data...Ch. 1.2 - Prob. 21ECh. 1.2 - In Exercises 15–24, determine whether the data...Ch. 1.2 - Prob. 23ECh. 1.2 - In Exercises 15–24, determine whether the data...Ch. 1.2 - Prob. 25ECh. 1.2 - In Exercises 25–32, determine whether the data...Ch. 1.2 - Prob. 27ECh. 1.2 - In Exercises 25–32, determine whether the data...Ch. 1.2 - Prob. 29ECh. 1.2 - Prob. 30ECh. 1.2 - Prob. 31ECh. 1.2 - In Exercises 25–32, determine whether the data...Ch. 1.2 - Prob. 33ECh. 1.2 - In Exercises 33–40, determine whether the data...Ch. 1.2 - Prob. 35ECh. 1.2 - In Exercises 33–40, determine whether the data...Ch. 1.2 - Prob. 37ECh. 1.2 - In Exercises 33–40, determine whether the data...Ch. 1.2 - Prob. 39ECh. 1.2 - In Exercises 33–40, determine whether the data...Ch. 1.2 - Working with the Concepts
41. Ringtones: Following...Ch. 1.2 - 42. More Ringtones: The following table presents...Ch. 1.2 - 43. How’s the economy? A poll conducted by the...Ch. 1.2 - 44. Global warming: A recent Pew poll asked people...Ch. 1.2 - 45. Read any good books lately? According to Time...Ch. 1.2 - 46. Watch your language: According to...Ch. 1.2 - 47. Top ten PC games: Nielsen Media recently...Ch. 1.2 - 48. At the movies: The following table provides...Ch. 1.2 - Prob. 49ECh. 1.3 - 1. To study the effect of air pollution on...Ch. 1.3 - 2. It is known that drinking alcohol increases the...Ch. 1.3 - In a study conducted at the University of Southern...Ch. 1.3 - In a study conducted at the University of...Ch. 1.3 - In Exercises 5–10, fill in each blank with the...Ch. 1.3 - Prob. 6ECh. 1.3 - Prob. 7ECh. 1.3 - Prob. 8ECh. 1.3 - Prob. 9ECh. 1.3 - Prob. 10ECh. 1.3 - Prob. 11ECh. 1.3 - Prob. 12ECh. 1.3 - Prob. 13ECh. 1.3 - Prob. 14ECh. 1.3 - In Exercises 11–16, determine whether the...Ch. 1.3 - Prob. 16ECh. 1.3 - Prob. 17ECh. 1.3 - Prob. 18ECh. 1.3 - Prob. 19ECh. 1.3 - Prob. 20ECh. 1.3 - Prob. 21ECh. 1.3 - Prob. 22ECh. 1.3 - 23. Taxicabs and crime: A sociologist discovered...Ch. 1.3 - Prob. 24ECh. 1.3 - Prob. 25ECh. 1.3 - Prob. 26ECh. 1.3 - Prob. 27ECh. 1.3 - Prob. 28ECh. 1.3 - Prob. 29ECh. 1.3 - Prob. 30ECh. 1.4 - Exercises 1 and 2 are the Check Your Understanding...Ch. 1.4 - Exercises 1 and 2 are the Check Your Understanding...Ch. 1.4 - Prob. 3ECh. 1.4 - Prob. 4ECh. 1.4 - Prob. 5ECh. 1.4 - Prob. 6ECh. 1.4 - In Exercises 6–8, determine whether the statement...Ch. 1.4 - Prob. 8ECh. 1.4 - In Exercises 9–16, specify the type of bias...Ch. 1.4 - In Exercises 9–16, specify the type of bias...Ch. 1.4 - In Exercises 9–16, specify the type of bias...Ch. 1.4 - In Exercises 9–16, specify the type of bias...Ch. 1.4 - In Exercises 9–16, specify the type of bias...Ch. 1.4 - In Exercises 9–16, specify the type of bias...Ch. 1.4 - Prob. 15ECh. 1.4 - In Exercises 9–16, specify the type of bias...Ch. 1.4 - Nuclear power, anyone? In a survey conducted by...Ch. 1.4 - Prob. 18ECh. 1.4 - Prob. 19ECh. 1.4 - Prob. 20ECh. 1.4 - Literary Digest poll: In the 1936 presidential...Ch. 1 - Provide an example of a qualitative variable and...Ch. 1 - Is the name of your favorite author a qualitative...Ch. 1 - True or false: Nominal variables do not have a...Ch. 1 - Prob. 4CQCh. 1 - Prob. 5CQCh. 1 - Prob. 6CQCh. 1 - Prob. 7CQCh. 1 - Prob. 8CQCh. 1 - True or false: An experiment where neither the...Ch. 1 - Prob. 10CQCh. 1 - Prob. 11CQCh. 1 - Prob. 12CQCh. 1 - Prob. 13CQCh. 1 - Prob. 14CQCh. 1 - Prob. 15CQCh. 1 - Prob. 1RECh. 1 - Prob. 2RECh. 1 - Discrete or continuous? Is the area of a college...Ch. 1 - Prob. 4RECh. 1 - In Exercises 5–8, identify the kind of sample that...Ch. 1 - In Exercises 5–8, identify the kind of sample that...Ch. 1 - Prob. 7RECh. 1 - In Exercises 5–8, identify the kind of sample that...Ch. 1 - Prob. 9RECh. 1 - Prob. 10RECh. 1 - Prob. 11RECh. 1 - Prob. 12RECh. 1 - In Exercises 13–15, explain why the results of the...Ch. 1 - In Exercises 13–15, explain why the results of the...Ch. 1 - In Exercises 13–15, explain why the results of the...Ch. 1 - Prob. 1WAICh. 1 - Prob. 2WAICh. 1 - Describe circumstances under which each of the...Ch. 1 - Prob. 4WAICh. 1 - Prob. 5WAICh. 1 - Prob. 6WAICh. 1 - Prob. 7WAICh. 1 - Prob. 9WAICh. 1 - Prob. 1CSCh. 1 - Prob. 2CSCh. 1 - Prob. 3CSCh. 1 - Prob. 4CSCh. 1 - Prob. 5CSCh. 1 - Prob. 6CSCh. 1 - Prob. 7CSCh. 1 - Prob. 8CSCh. 1 - Prob. 9CSCh. 1 - Prob. 10CSCh. 1 - Prob. 11CSCh. 1 - Air pollution is a serious problem in many places....
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