Frederick J. Gravetter is contemplating ritual suicide for the disastrous job he

Question

Frederick J. Gravetter is contemplating ritual suicide for the disastrous job he did in his latest edition of Statistics for the Behavioral Sciences, but instead decides hopefully to give himself some positive feeling by finding out if stronger students like his book better than weaker students. So he sends out 4000 questionnaires asking students to state what grade they expect to get in their stats class, and to rate how much they like the book (on a scale from 1 for hated it to 8 for loved it). Because of the way he asked the students to rate the data, he was able to treat these data as interval. He found that A students rated the book as 4.7 (s=1.1), and B students rated it as 4.5 (s=1.5), C students rated the book as 4.6 (s=1.9), and that D/F students rated it as 3.4 (s=0.7), and that the distributions looked like textbook normal curves. Does one set of students like his book better than another?
a.   one-sample z-test (single-sample z-test)
b.   repeated-measures t-test (i.e., dependent samples t-test)
c.   Independent-measures ANOVA
d.   Repeated-measures ANOVA (i.e., dependent samples ANOVA)
e.   two-way ANOVA
Many Kentucky citizens have major health problems, and a health researcher wanted to compare a sample of Kentucky citizens in health to a national database of all U.S. citizens. So the researcher examined 100 Kentucky residents, counting the number of major major medical problems during a 2 year period. The researcher then compared the sample Kentucky data to the national average and variance data for the same 2-year period. What is the most appropriate statistical test to examine whether the Kentucky sample had the same health as the U.S. population in general?
a.   one-sample z-test (single-sample z-test)
b.   repeated-measures t-test (i.e., dependent samples t-test)
c.   Independent-measures ANOVA
d.   Repeated-measures ANOVA (i.e., dependent samples ANOVA)
e.   two-way ANOVA

Explanation / Answer

Ans:

1)Option c is correct(independent measures ANOVA)

For above case,we will use indpendent meaures ANOVA,as there are more than 2 groups and independnet samples.

2)option a is correct(one sample z test),as we have one sample and we are comparing to the national average(i.e. fixed)

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.