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(d) Print out the resulting spreadsheet so that all of the information ﬁts onto one
page
(e) Save the spreadsheet as: BIO3
Let’s call the Premed students Group A, the Biology majors Group B, the
Other Science majors Group C, and the General Ed requirement students
Group D.
Now, write the answers to the following questions using your Excel printout:
1. What are the null hypothesis and the research hypothesis for the
ANOVA F-test?
2. What is MS b on your Excel printout?
3. What is MS w on your Excel printout?
4. Compute F
MS b /MS w using your calculator.
5. What is the critical value of F on your Excel printout?
6. What is the result of the ANOVA F-test?
7. What is the conclusion of the ANOVA F-test in plain English?
8. If the ANOVA F-test produced a signiﬁcant difference between the four
types of students in their cumulative GPAs when entering the
Introductory Biology course, what is the null hypothesis and the research
hypothesis for the ANOVA t-test comparing Premed students (Group
A) versus Other Science majors (Group C)?
9. What is the mean (average) GPA for Premed students on your Excel
printout?
10. What is the mean (average) GPA for Other Science majors on your
Excel printout?
11. What are the degrees of freedom (df) for the ANOVA t-test comparing
Premed students versus Other Science majors?
12. What is the critical t value for this ANOVA t-test in Appendix E for
these degrees of freedom?
13. Compute the s.e. ANOVA using Excel for Premed students versus Other
Science majors.
14. Compute the ANOVA t-test value comparing Premed students versus
Other Science majors using Excel.
15. What is the result of the ANOVA t-test comparing Premed students
versus Other Science majors?
16. What is the conclusion of the ANOVA t-test comparing Premed students
versus Other Science majors in plain English?
3. Suppose that you wanted to study the effect of “crowding” on the weight of
brown trout ( Salmo trutta ) raised in a ﬁsh hatchery in the state of Colorado in the
U.S.A. Crowding is measured in terms of the number of trout raised in a
container (i.e., the density of the ﬁsh in the container) and the weight of the
ﬁsh is measured in grams. The trout have been raised in four containers (200,
350, 500, and 700 ﬁsh per container) for nine months. You decide to take a
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