The number of contaminating particles on a silicon wafer prior to a certain rinsing process was determined for each wafer in a sample of size 100, resulting in the following frequencies: Number of particles 0 11 32 2 3 13 13 05 4 5 6 7 8 9 10 3 12 11 15 17 10 10 4 11 12 13 14 3 2 1 Frequency IЛ USE SALT (a) What proportion of the sampled wafers had at least one particle? At least five particles? (Round your answers to two decimal places.) at least one particle at least five particles (b) What proportion of the sampled wafers had between five and ten particles, inclusive? Strictly between five and ten particles? (Round your answers to two decimal places.) between five and ten particles, inclusive strictly between five and ten particles (c) Draw a histogram/bar chart using relative frequency on the vertical axis. Percent 15 10 5 Percent 15 10 5 Number Number 0 1 2 3 4 5 6 7 8 9 1011121314 0 1 2 3 4 5 6 7 8 9 1011121314 Percent 15 10 5 0 1 2 3 4 5 6 7 8 9 1011121314 Percent 15 10 5 Number Number 0 1 2 3 4 5 6 7 8 9 1011121314 How would you describe the shape of the histogram? ○ The histogram is negatively skewed and unimodal. The histogram is positively skewed and unimodal. The histogram is fairly symmetric and unimodal. ○ The histogram is positively skewed and bimodal. The histogram is negatively skewed and bimodal. ○ The histogram is fairly symmetric and bimodal.
The number of contaminating particles on a silicon wafer prior to a certain rinsing process was determined for each wafer in a sample of size 100, resulting in the following frequencies: Number of particles 0 11 32 2 3 13 13 05 4 5 6 7 8 9 10 3 12 11 15 17 10 10 4 11 12 13 14 3 2 1 Frequency IЛ USE SALT (a) What proportion of the sampled wafers had at least one particle? At least five particles? (Round your answers to two decimal places.) at least one particle at least five particles (b) What proportion of the sampled wafers had between five and ten particles, inclusive? Strictly between five and ten particles? (Round your answers to two decimal places.) between five and ten particles, inclusive strictly between five and ten particles (c) Draw a histogram/bar chart using relative frequency on the vertical axis. Percent 15 10 5 Percent 15 10 5 Number Number 0 1 2 3 4 5 6 7 8 9 1011121314 0 1 2 3 4 5 6 7 8 9 1011121314 Percent 15 10 5 0 1 2 3 4 5 6 7 8 9 1011121314 Percent 15 10 5 Number Number 0 1 2 3 4 5 6 7 8 9 1011121314 How would you describe the shape of the histogram? ○ The histogram is negatively skewed and unimodal. The histogram is positively skewed and unimodal. The histogram is fairly symmetric and unimodal. ○ The histogram is positively skewed and bimodal. The histogram is negatively skewed and bimodal. ○ The histogram is fairly symmetric and bimodal.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Transcribed Image Text:The number of contaminating particles on a silicon wafer prior to a certain rinsing process was determined for each wafer in a sample of size 100, resulting in the following frequencies:
Number of particles
0
11
32
2 3
13
13
05
4 5 6 7 8
9
10
3 12 11 15 17 10 10
4
11
12
13
14
3
2
1
Frequency
IЛ USE SALT
(a) What proportion of the sampled wafers had at least one particle? At least five particles? (Round your answers to two decimal places.)
at least one particle
at least five particles
(b) What proportion of the sampled wafers had between five and ten particles, inclusive? Strictly between five and ten particles? (Round your answers to two decimal places.)
between five and ten particles, inclusive
strictly between five and ten particles
(c) Draw a histogram/bar chart using relative frequency on the vertical axis.
Percent
15
10
5
Percent
15
10
5
Number
Number
0 1 2 3 4 5 6 7 8 9 1011121314
0 1 2 3 4 5 6 7 8 9 1011121314
Percent
15
10
5
0 1 2 3 4 5 6 7 8 9 1011121314
Percent
15
10
5
Number
Number
0 1 2 3 4 5 6 7 8 9 1011121314
How would you describe the shape of the histogram?
○ The histogram is negatively skewed and unimodal.
The histogram is positively skewed and unimodal.
The histogram is fairly symmetric and unimodal.
○ The histogram is positively skewed and bimodal.
The histogram is negatively skewed and bimodal.
○ The histogram is fairly symmetric and bimodal.
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