The accompanying summary data on Ceo, particle sizes (nm) under certain experimental conditions was read from a graph in an article. 3.0-<3.5 3.5-<4.0 4.0-<4.5 4.5-<5.0 5.0-<5.5 6 14 28 35 22 5.5-<6.0 6.0-<6.5 6.5-<7.0 7.0-<7.5 7.5-<8.0 13 3 1 (a) What proportion of the observations are less than 5? (Round your answer to three decimal places.) (b) What proportion of the observations are at least 6? (Round your answer to three decimal places.) (c) Construct a histogram with relative frequency on the vertical axis. Percent Percent Percent Percent 25 25 25 25 20 20 20 20 15 15 15 15 10 10 10 10 5 Particle 5 5 5 Particle Size Particle Size Particle Size 3 4 5 6 7 8 (nm 3 4 5 6 7 8 3 4 5 6 7 8 3 4 5 6 7 8 (nm) (nm) (nm) Comment on interesting features. In particular, does the distribution of particle sizes appear to be reasonably symmetric or somewhat skewed? [Note: The investigators fit a lognormal distribution to the data.] O symmetric O positively skewed
The accompanying summary data on Ceo, particle sizes (nm) under certain experimental conditions was read from a graph in an article. 3.0-<3.5 3.5-<4.0 4.0-<4.5 4.5-<5.0 5.0-<5.5 6 14 28 35 22 5.5-<6.0 6.0-<6.5 6.5-<7.0 7.0-<7.5 7.5-<8.0 13 3 1 (a) What proportion of the observations are less than 5? (Round your answer to three decimal places.) (b) What proportion of the observations are at least 6? (Round your answer to three decimal places.) (c) Construct a histogram with relative frequency on the vertical axis. Percent Percent Percent Percent 25 25 25 25 20 20 20 20 15 15 15 15 10 10 10 10 5 Particle 5 5 5 Particle Size Particle Size Particle Size 3 4 5 6 7 8 (nm 3 4 5 6 7 8 3 4 5 6 7 8 3 4 5 6 7 8 (nm) (nm) (nm) Comment on interesting features. In particular, does the distribution of particle sizes appear to be reasonably symmetric or somewhat skewed? [Note: The investigators fit a lognormal distribution to the data.] O symmetric O positively skewed
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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![The accompanying summary data on Ceo, particle sizes (nm) under certain experimental conditions was read from a graph in an article.
3.0-<3.5
3.5-<4.0
4.0-<4.5
4.5-<5.0
5.0-<5.5
14
28
35
22
5.5-<6.0
6.0-<6.5
6.5-<7.0
7.0-<7.5
7.5-<8.0
13
6
3
5
1
(a) What proportion of the observations are less than 5? (Round your answer to three decimal places.)
(b) What proportion of the observations are at least 6? (Round your answer to three decimal places.)
(c) Construct a histogram with relative frequency on the vertical axis.
Percent
Percent
Percent
Percent
25
25
25
25
20
20
20
20
15
15
15
15
10
10
10
10
5
Particle Size
5
5
Particle Size
Particle Size
Particle Size
3 4 5 6 7 8
(nm)
3 4 5 6 7 8
3 4 5 6 7 8
3 4 5 6 7 8
(nm)
(nm)
(nm)
Comment on interesting features. In particular, does the distribution of particle sizes appear to be reasonably symmetric or somewhat skewed? [Note: The investigators fit a lognormal distribution to the data.]
O symmetric
O positively skewed
O negatively skewed](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2d158991-3671-4459-aef6-bd0615668acc%2Fc4ce6504-ed2a-4415-b9ff-9b912d1fb765%2Fyn80k5m_processed.png&w=3840&q=75)
Transcribed Image Text:The accompanying summary data on Ceo, particle sizes (nm) under certain experimental conditions was read from a graph in an article.
3.0-<3.5
3.5-<4.0
4.0-<4.5
4.5-<5.0
5.0-<5.5
14
28
35
22
5.5-<6.0
6.0-<6.5
6.5-<7.0
7.0-<7.5
7.5-<8.0
13
6
3
5
1
(a) What proportion of the observations are less than 5? (Round your answer to three decimal places.)
(b) What proportion of the observations are at least 6? (Round your answer to three decimal places.)
(c) Construct a histogram with relative frequency on the vertical axis.
Percent
Percent
Percent
Percent
25
25
25
25
20
20
20
20
15
15
15
15
10
10
10
10
5
Particle Size
5
5
Particle Size
Particle Size
Particle Size
3 4 5 6 7 8
(nm)
3 4 5 6 7 8
3 4 5 6 7 8
3 4 5 6 7 8
(nm)
(nm)
(nm)
Comment on interesting features. In particular, does the distribution of particle sizes appear to be reasonably symmetric or somewhat skewed? [Note: The investigators fit a lognormal distribution to the data.]
O symmetric
O positively skewed
O negatively skewed
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