Question

All use this image

DF SUM OF SQUARES MEAN P-VALUE SQUARE Group 37.813 18.907 0.033 Error 98.910 4.710 XXXX XXXXXXX Total 136.723 XXXX XXXXXXX

1. Archaeologists recently analyzed the skeletal remains of 8 humans from each of three different time periods (Prehistoric Era, Middle Ages, and the Modern Era) to determine if there was a significant difference in their average height.  Assume that the heights in all three populations are normally distributed. What are the numerator and denominator degrees of freedom?

   	A.	Numerator: 2, Denominator: 5
   	B.	Numerator: 3, Denominator: 5
   	C.	Numerator: 2, Denominator: 21
   	D.	Numerator: 3, Denominator: 21

5 points   

QUESTION 25

1. Archaeologists recently analyzed the skeletal remains of 8 humans from each of three different time periods (Prehistoric Era, Middle Ages, and the Modern Era) to determine if there was a significant difference in their average height.  Assume that the heights in all three populations are normally distributed. Using only the ANOVA table, at the .05 level of significance, what conclusion can we come to regarding the mean heights across the groups?

   	A.	None of the mean heights are significantly different.
   	B.	Exactly two of the mean heights are significantly different.
   	C.	All three mean heights are significantly different from one another.
   	D.	At least two of the mean heights are significantly different.

5 points   

QUESTION 26

1. Archaeologists recently analyzed the skeletal remains of 8 humans from each of three different time periods (Prehistoric Era, Middle Ages, and the Modern Era) to determine if there was a significant difference in their average height.  Assume that the heights in all three populations are normally distributed. The F-statistic is missing from the output. From the information given, it must be:

   	A.	0.2491
   	B.	-4.014
   	C.	4.014
   	D.	-0.2491

Answer 1

IDF for Numarator. = 2 = 37.813 18.go7 of fer Denominador = 21 98.glo 4.710 - Ang :c. Numerator 2 : Denominator =21 Q-25) Peralue = 0.033 1. At least f heights are two of the mean significantly different. I E = = msgrove msaxror 18.gol = 4.710 4.014 Ans: [ c. 4.014