please do answer using excell, and do give the solution, thank you! 8. An investigator thinks that people under the age of forty have vocabularies that aredifferent than those of people over sixty years of age. The investigator administers avocabulary test to a group of 31 younger subjects and to a group of 31 older subjects.Higher scores reflect better performance. The mean score for younger subjects was14.0 and the standard deviation of younger subject's scores was 5.0. The mean scorefor older subjects was 20.0 and the standard deviation of older subject's scores was 6.0.Does this experiment provide evidence for the investigator's theory?As part of your answer:a. Please provide, in words, the null and alternative hypotheses.b. Provide the decision rule for rejecting the null hypothesis, including the criticalvalue(s) for the appropriate statistic.c. Using an alpha level of .05, test the null hypothesis. As part of this test, pleasecompare the actual value for the appropriate statistic against the critical value(s) for theappropriate statistic.d. State your conclusion regarding the results from this test in language that a friend ofyours with no knowledge of statistics could understand.

Name: please do answer using excell, and do give the solution, thank you! 8.
Uploaded: 2024-03-20T07:07:26.000Z
Channel: Bartleby
Description: please do answer using excell, and do give the solution, thank you! 8. An investigator thinks that people under the age of forty have vocabularies that aredifferent than those of people over sixty years of age. The investigator administers avocabular