A researcher conducted an analysis that supported the research hypothesis that SJSU students spend less on textbooks than the average California college student. As a result of this finding, imagine you hypothesize that SJSU freshmen owe less on their credit cards than the average college freshman. To test this hypothesis, a group of college students are asked, "If you have your own credit card(s) , how much do you currently owe on them?" The responses of some of the students in this class are summarized as: N = 25 = 834.53
S = 169.40
According to a recent study, the average college freshman owes $900 on their credit cards (Arano, 2006) . Therefore, in this analysis, how could the null and alternative hypotheses be stated?

Question

A researcher conducted an analysis that supported the research hypothesis that SJSU students spend less on textbooks than the average California college student. As a result of this finding, imagine you hypothesize that SJSU freshmen owe less on their credit cards than the average college freshman. To test this hypothesis, a group of college students are asked, "If you have your own credit card(s) , how much do you currently owe on them?" The responses of some of the students in this class are summarized as: N = 25

= 834.53
S = 169.40
According to a recent study, the average college freshman owes $900 on their credit cards (Arano, 2006) . Therefore, in this analysis, how could the null and alternative hypotheses be stated?

Quizplus · Accepted Answer

The null hypothesis (H₀) should be that the mean credit card debt for SJSU freshmen is not different from the average credit card debt of college freshmen (which is $900). In other words, H₀: μ = 900. The alternative hypothesis (H₁) would be that the mean credit card debt for SJSU freshmen is different from the average credit card debt of college freshmen. Therefore, H₁: μ ≠ 900.

A Researcher Conducted an Analysis That Supported the Research Hypothesis