A study is conducted involving 12 infants to investigate the association between gestational age at birth, measured in weeks, and birth weight, measured in grams. Use Spearman rho to test the hypothesis at 5% level of significance. What is the value of ΣD2? What is the absolute calculated ρ(rho) value? Using the tabulated rho value ρρtabtab = 0.587, what is the decision? do we accept Ho or reject Ho?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.6: Exponential And Logarithmic Equations
Problem 6E
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A study is conducted involving 12 infants to investigate the association between gestational age at birth, measured in weeks, and birth weight, measured in grams. Use Spearman rho to test the hypothesis at 5% level of significance.

  • What is the value of ΣD2?
  • What is the absolute calculated ρ(rho) value?
  • Using the tabulated rho value ρρtabtab = 0.587, what is the decision? do we accept Ho or reject Ho?
Gestational age Birth weight
(grams)
1895
Infant No.
(weeks)
35
1
2
36
2030
29
1440
40
2835
36
3090
3827
42
7
40
3260
2690
3285
8
37
9
41
10
38
2920
11
12
39
3430
41
3657
N345 6
Transcribed Image Text:Gestational age Birth weight (grams) 1895 Infant No. (weeks) 35 1 2 36 2030 29 1440 40 2835 36 3090 3827 42 7 40 3260 2690 3285 8 37 9 41 10 38 2920 11 12 39 3430 41 3657 N345 6
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