Question

Male and female populations of humpback whales under 80 years old are represented by age in the table below. Complete parts (a) through (d).

Age Males Females

0-9 (10) (6)

10-19 (17) (9)

20-29 (13) (15)

30-39 (16) (19)

40-49 (24) (24)

50-59 (21) (25)

60-69 (19) (19)

70-79 (12) (13)

Find the population mean and the standard deviation of age for males and Females

Answer #1

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Class Limits (Age in years) , Frequency
0-9 ,1
10-19, 7
20-29, 12
30-39 ,12
40-49, 23
50-59, 23
60-69 ,32
70-79 ,9
80-89 ,4
90-99, 1
Find the mean, calculate sample variance and sample standard
deviation,

StudentNO
Gender
Height in inchese
1
Female
63
2
Female
64.0
3
Male
67.0
4
Female
59
5
Male
60
6
Female
61
7
Female
62
8
Female
63
9
Female
63
10
Female
64
11
Male
64
12
Female
65
13
Female
65
14
Female
65
15
Female
65
16
Female
66
17
Female
66
18
Male
67
19
Male
67
20
Male
67
21
Female
67
22
Male
67
23
Male
67
24
Female
67.5
25
Male
68...

Consider the following proportions regarding age and
type of offence.
Type of Offence
Age (Years)
Violent
Property
Drug
10 – 19
0.02
0.02
0.08
20 – 29
0.05
0.04
0.11
30 – 39
0.04
0.02
0.08
40 – 49
0.03
0.04
0.09
50 – 59
0.04
0.06
0.05
60 – 69
0.01
0.06
0.04
70 – 79
0.01
0.03
0.03
80 – 89
0.00
0.03
0.02
What is the probability of being aged 20 to 29 years?
What is the...

MALE :Student # Gender Height Shoe Age Hand
1 M 67 10 19 R
2 M 74 12 17 R
3 M 72 11.5 19 R
4 M 69 10 35 R
5 M 66 9 18 R
6 M 71 10.5 17 R
7 M 72 10.5 17 R
8 M 66 10 20 R
9 M 67 10 18 R
10 M 71 10.5 24 R
11 M 66 10 21 R
12 M 71 10.5 18 R...

3. (a) Use the sample to make a point estimate of the mean
height of the entire female/male SCC student body.
(b) Construct a 93% confidence interval for the mean height of
the entire female/male SCC student body.
(c) What is the width of this interval?
(d) Write a sentence interpreting your confidence interval.
male Student # Gender Height Shoe Age Hand
1 M 67 10 19 R
2 M 74 12 17 R
3 M 72 11.5 19 R...

the U.S Bureau of Justice reports the estimated percentage of
sentenced prisoners under state and federal jurisdiction by sex and
age, as of December 31, 2011. Percentages are represented in the
table below. Due to rounding the totals may not equal 100%.
All Males (%) Total Number (1,402,404)
All Females (%) Total Number (106,232)
18-19
1.0
0.6
20-24
11.4
10.0
25-29
15.4
17.5
30-34
16.5
18.6
35-39
14.2
14.7
40-44
12.2
12.8
45-49
10.4
10.9
50-54
8.5
7.7
55-59
5.2...

After you run the t-test, answer these questions (type responses
in this box):
1. What is the p-value (the significance)?
2. Is the difference between the mean age first diagnosed for
males and females statistically significant?
Independent Samples
t-TEST
Age First Diagnosed
Male
Female
25
33
35
32
34
45
22
44
34
21
21
33
21
29
18
30
43
31
28
28
29
44
32
54
41
32
25
39
30
36
19
50
15
21
18
37...

We want to test the hypothesis that ‘Education (Years)’ differs
by ‘Ethnicity’. Have Minitab or Statcrunch perform an ANOVA test to
determine this.
a) Write the hypotheses using symbols and words. Choose a
significance level.
b) Check the conditions for the test (you might want to do part
(c) first). If the conditions fail, make a statement about this,
but perform the test anywa
c) Include the output from Minitab or Statcrunch after
performing the test.
d) Determine whether to...

Credit Score
Age
Income
Residence
Gender
Louise
546
20
$484
1
Female
Danielle
601
29
$936
18
Female
Mohan
610
36
$953
13
Male
Roger
829
65
$1,549
19
Male
Brad
643
36
$1,169
12
Male
John
652
34
$1,591
8
Male
Karim
787
62
$1,522
11
Male
Jasmine
669
40
$1,202
9
Female
Emily
775
55
$1,873
5
Female
Donna
688
49
$1,185
11
Female
Monique
740
54
$1,346
3
Female
Fred
690
44
$1,521
17
Male
Maria
710...

Construct the cumulative frequency distribution for the given
data.
Age (years) of Best Actress when award was won
Frequency
20-29
2828
30-39
3737
40-49
1414
50-59
22
60-69
77
70-79
22
80-89
22
Age (years) of Best Actress when award was won
Cumulative Frequency
Less than 30
nothing
Less than 40
nothing
Less than 50
nothing
Less than 60
nothing
Less than 70
nothing
Less than 80
nothing
Less than 90
nothing

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