MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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The ages (in months) at which 50 children were tirst enrolled in a preschool are listed below.
49
37
44
36
41
47
33
47
38
33
44
46
32
33
38
30
40
30
40
40
34.
49
40
32
42
37
31
40
42
41
56
36
41
30
37
47
47
32
34
32
39
43
35.
39
37
44
40
(a) Construct a relative fregiericy histogram for these data. Start the lower bounidary of the fiest dlass at 30 and use a dass width of 5 months
Relative
Relative
Relative
Frequency
Frequency
Frequency
0.30
0.25
0.30
0.20
0.25
0.15
0.20
0.20
0.15
0.15
0.10
0.10
0.10
0.05
0.05
0.00
Month
60
Month
60
0.00
Month
0.00
0.00
35
45
50
55
35
53
35 40 45 so 35 60
Relative
Trequency
0.30
0.25
0.20
0.15
0.10
0.05
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Transcribed Image Text:The ages (in months) at which 50 children were tirst enrolled in a preschool are listed below. 49 37 44 36 41 47 33 47 38 33 44 46 32 33 38 30 40 30 40 40 34. 49 40 32 42 37 31 40 42 41 56 36 41 30 37 47 47 32 34 32 39 43 35. 39 37 44 40 (a) Construct a relative fregiericy histogram for these data. Start the lower bounidary of the fiest dlass at 30 and use a dass width of 5 months Relative Relative Relative Frequency Frequency Frequency 0.30 0.25 0.30 0.20 0.25 0.15 0.20 0.20 0.15 0.15 0.10 0.10 0.10 0.05 0.05 0.00 Month 60 Month 60 0.00 Month 0.00 0.00 35 45 50 55 35 53 35 40 45 so 35 60 Relative Trequency 0.30 0.25 0.20 0.15 0.10 0.05
Reiative
Frequency
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Month
60
35
40 45 50
55
(b) What proportion of the children were 35 months or older, but less than 45 months of age when first enrolled in preschool?
(c) f one child were selected at random from this group of children, what is the probability that the child was less than 30 months old when first enrolled in preschool?
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Transcribed Image Text:Reiative Frequency 0.30 0.25 0.20 0.15 0.10 0.05 0.00 Month 60 35 40 45 50 55 (b) What proportion of the children were 35 months or older, but less than 45 months of age when first enrolled in preschool? (c) f one child were selected at random from this group of children, what is the probability that the child was less than 30 months old when first enrolled in preschool?
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