Question

5) The overall percentages-of-total-possible-credit in a particular statistics class were recorded for 20 students along with the students’ age in months. The rankings of the data are given below. Test the following H0: Age is unrelated to performance in this class? Use rank correlation.

Student j	Age	%
1	1	1
2	2	2
3	4	3
4	3	4
5	5	7
6	6	5
7	7	6
8	8	8
9	9	9
10	10	10

Calculated test statistic:

Critical value of the test statistic:

Decision rule: Decision:

Answer 1

he rantirg of the dała arye vJow: gjven Claijm : Agesunneated to Pon Furmante in the closs. e is Unrelated toeomante To Test in the class NS Prg e is 'γ-olafed to performance in the clan Η TestS between dz -J

〈102-1) IDX 4 ) 0 4848

Crthirel value of the et stahshish' Assumeao.osleveo el f sig nifican(e f volue 0000 214 (fom cuie) of significan le. iF P value <α value hove both Condihien aksfy hene we reject H.and Aer H

heve both Condin oakf henue we henie we reject Hand AerH onduion we Accept Alternahve hrothesis that is, Age is si ,e eloF At this class . α~o, os in err e between variales