An investigator thinks that people under the age of forty have vocabularies that are different than those of people over sixty years of age. The investigator administers a vocabulary test to a group of 5 younger subjects and to a group of 5 older subjects. Higher scores reflect better performance. The vocabulary test’s results are given below: Group 1 (5 younger subjects) Group 2 (5 older subjects) 10 7 7 9 3 10 4 8 5 5 By using 1% level of significance test that people under the age of forty have vocabularies are different than those of people over sixty years of age.
An investigator thinks that people under the age of forty have vocabularies that are different than
those of people over sixty years of age. The investigator administers a vocabulary test to a group
of 5 younger subjects and to a group of 5 older subjects. Higher scores reflect better
performance. The vocabulary test’s results are given below:
Group 1 (5 younger subjects) Group 2 (5 older subjects)
10 7
7 9
3 10
4 8
5 5
By using 1% level of significance test that people under the age of forty have vocabularies are
different than those of people over sixty years of age.
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