Question

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 31 younger subjects and to a group of 31 older subjects. Higher scores reflect better performance. The mean score for younger subjects was 14.0 and the standard deviation of younger subject's scores was 5.1. The mean score for older subjects was 20.0 and the standard deviation of older subject's scores was 7.3. Using a 0.10 significance level and the StatCrunch output what is the correct decision for this hypothesis test?

		Reject H0
		Cannot determine
		Retain H0

Please write a summary statement for the hypothesis test for this problem.

Answer 1