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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Frequency 1 3 3 12 11 15 18 10 11 4 5 3 1 2 1 (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 Answer:__________ at least five particles Answer:__________ (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 Answer:___________ strictly between five and ten particles Answer:___________ (c) Draw a histogram/bar chart using relative frequency on the vertical axis. Answer: How would you describe the shape of the histogram? Answer: _____The histogram is fairly symmetric and bimodal. _____The histogram is fairly symmetric and unimodal. _____The histogram is negatively skewed and unimodal. _____The histogram is positively skewed and unimodal.The histogram is positively skewed and bimodal. _____The histogram is negatively skewed 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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Frequency 1 3 3 12 11 15 18 10 11 4 5 3 1 2 1 (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 Answer:__________ at least five particles Answer:__________ (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 Answer:___________ strictly between five and ten particles Answer:___________ (c) Draw a histogram/bar chart using relative frequency on the vertical axis. Answer: How would you describe the shape of the histogram? Answer: _____The histogram is fairly symmetric and bimodal. _____The histogram is fairly symmetric and unimodal. _____The histogram is negatively skewed and unimodal. _____The histogram is positively skewed and unimodal.The histogram is positively skewed and bimodal. _____The histogram is negatively skewed and bimodal.
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter29: Tolerance, Clearance, And Interference
Section: Chapter Questions
Problem 16A: Spacers are manufactured to the mean dimension and tolerance shown in Figure 29-12. An inspector...
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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 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| Frequency | 1 | 3 | 3 | 12 | 11 | 15 | 18 | 10 | 11 | 4 | 5 | 3 | 1 | 2 | 1 |
(a) What proportion of the sampled wafers had at least one particle? At least five particles? (Round your answers to two decimal places.)
(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.)
(c) Draw a histogram/bar chart using relative frequency on the vertical axis.
Answer:
How would you describe the shape of the histogram?
| at least one particle | Answer:__________ |
| at least five particles | Answer:__________ |
(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 | Answer:___________ |
| strictly between five and ten particles | Answer:___________ |
(c) Draw a histogram/bar chart using relative frequency on the vertical axis.
Answer:
How would you describe the shape of the histogram?
Answer:
_____The histogram is fairly symmetric and bimodal.
_____The histogram is fairly symmetric and unimodal.
_____The histogram is negatively skewed and unimodal.
_____The histogram is positively skewed and unimodal.The histogram is positively skewed and bimodal.
_____The histogram is negatively skewed and bimodal.
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