Exhibit 19-1. A researcher wished to determine if there was a difference in the college aptitude examination scores of traditional and nontraditional undergraduate students. The researcher selected p = .05 as the level for rejecting the null hypothesis. The researcher obtained a mean score of 52 for nontraditional students and a mean score of 40 for the traditional students. Statistical analysis
indicated that the difference in means was significant at the .05 level.
Refer to Exhibit 19-1. The null hypothesis for this study would be
a.
nontraditional college students will score higher on a college aptitude test than will traditional college students.
b.
traditional college students will score higher on a college aptitude test than will nontraditional college students.
c.
the age of students will have a significant effect on their performance on a college aptitude test.
d.
there is no significant difference in the performance of traditional and nontraditional college students on a college aptitude examination.
ANS: D
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