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# 1. The minitab output below represents a 2-way ANOVA where

### Resolved Question:

1. The minitab output below represents a 2-way ANOVA where the factors of time of day a class was taken and instruction type with the response variable as the final grade received in the class. All hypothesis tests should be performed using α = 0.05 (20 points)

Two-way ANOVA: Final Grade versus Time of Day, Instruction Type

Source DF SS MS F P
Time of Day 2 186.33 93.1667 2.33 0.153
Instruction Type 2 69.33 34.6667 0.87 0.453
Interaction 4 384.33 96.0833 2.40 0.127
Error 9 360.50 40.0556
Total 17 1000.50

S = 6.329 R-Sq = 63.97% R-Sq(adj) = 31.94%

Two-way ANOVA: Final Grade versus Time of Day, Instruction Type

Source DF SS MS F P
Time of Day 2 186.33 93.1667 1.63 0.234
Instruction Type 2 69.33 34.6667 0.61 0.561
Error 13 744.83 57.2949
Total 17 1000.50

S = 7.569 R-Sq = 25.55% R-Sq(adj) = 2.65%

a. Test for an interaction

State the Null and Alternative Hypotheses:

State the test statistic:

State the p-value:

Decision:
Conclusion

b. Both minitab outputs, with interaction and without are given. Use the appropriate output to test if time of day has an effect on final grade.

State the Null and Alternative Hypotheses:

State the test statistic:

State the p-value:

Decision

Conclusion

c. Both minitab outputs, with interaction and without are given. Use the appropriate output to test if instruction type has an effect on final grade.

State the Null and Alternative Hypotheses:

State the test statistic:

State the p-value:

Decision

Conclusion
Submitted: 2 years ago.
Category: Homework
Expert:  R.R. Jha replied 2 years ago.
Hi,
Welcome to JA!

I'd be glad to help with your question. I'm working on it and would send the solution as soon as I'm done.

Thanks!
Customer: replied 2 years ago.

Thanks RRJha, Incase you are wondering the deadline for this is 08/14/2013 (today) 9:00pm Eastern Standard Time (U.S.A)

Expert:  R.R. Jha replied 2 years ago.
You're most welcome!
I'll post the answer within half an hour or so.
Customer: replied 2 years ago.

great, plz be as detailed as possible as i will use these to complete other similar problems. thx again

Expert:  R.R. Jha replied 2 years ago.
Ok. I'll put in the detail if required anywhere. By the first look, it seems we only have to pick up correct statistics from the supplied output and interpret it.
Customer: replied 2 years ago.

yes, you have to determine the appropriate output to test out the hypothesis..

Expert:  R.R. Jha replied 2 years ago.
THIS ANSWER IS LOCKED!

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R.R. Jha, Tutor
Category: Homework
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Customer: replied 2 years ago.

thx this looks great!!

Expert:  R.R. Jha replied 2 years ago.
Most welcome :)

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