Which age groups are being compared for contrast 1? 30 to 39 year olds and 40 to 49 year olds 40 to 49 year olds and 50 to 59 year olds O 18 to 29 year olds and 30 to 39 year olds O 18 to 29 year olds and 40 to 49 year olds
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
Please see 3a.png & 3b.png
![Which age groups are being compared for contrast 1?
30 to 39 year olds and 40 to 49 year olds
40 to 49 year olds and 50 to 59 year olds
O 18 to 29 year olds and 30 to 39 year olds
18 to 29 year olds and 40 to 49 year olds](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7ac4b794-0509-4381-888f-5f64a6a99e05%2F7f5a74cb-d0d9-460c-b567-4f5a0adbde6c%2Figs3qzm_processed.png&w=3840&q=75)
![Descriptives
Anxiety Score
95% Confidence Interval for
Mean
N
Mean
Std. Deviation
Std. Error
Lower Bound
Upper Bound
Minimum
Maximum
18 to 29
20
10.8905
2.11376
.47265
9.9012
11.8798
7.84
15.14
30 to 39
20
10.7170
2.49308
.55747
9.5502
11.8838
6.30
17.52
40 to 49
20
9.9370
3.05279
.68263
8.5082
11.3658
4.82
14.84
50 to 59
20
10.1395
2.19211
.49017
9.1136
11.1654
5.32
13.73
Total
80
10.4210
2.47465
.27667
9.8703
10.9717
4.82
17.52
ANOVA
Anxiety Score
Sum of
Squares
df
Mean Square
F
Sig.
Between Groups
12.431
3
4.144
.668
.574
Within Groups
471.358
76
6.202
Total
483.789
79
Contrast Coefficients
AgeGroup
Contrast
18 to 29
30 to 39
40 to 49
50 to 59
1
1
-1
1
-1
Contrast Tests
Value of
Contrast
Contrast
Std. Error
t
df
Sig. (2-tailed)
Anxiety Score
Assume equal variances
1
.1735
.78753
.220
76
.826
2
-.2025
.78753
-.257
76
.798
Does not assume equal
1
.1735
.73087
.237
37.010
.814
variances
2
-.2025
.84038
-.241
34.478
.811](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7ac4b794-0509-4381-888f-5f64a6a99e05%2F7f5a74cb-d0d9-460c-b567-4f5a0adbde6c%2F57e57zcn_processed.png&w=3840&q=75)
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