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# Skull Measurements from Different Times Researchers

ISBN: 9780321836960 18

## Solution for problem 21 BB Chapter 9.5

Elementary Statistics | 12th Edition

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Problem 21 BB

Skull Measurements from Different Times Researchers measured skulls from different time periods in an attempt to determine whether interbreeding of cultures occurred. Results are given below (based on data from Ancient Races of the Thebaid,by Thomson and Randall-Maciver, Oxford University Press). Use a 0.05 significance level to test the claim that the variation of maximal skull breadths in 4000B.C.is the same as the variation ina.d.150.

4000b.c.(Maximal Skull Breadth): n=30,x=131.37 mm,s=5.13 mm

a.d.150 (Maximal Skull Breadth): n = 30,x =136.17 mm,s =5.35 mm

Step-by-Step Solution:
Step 1 of 3

Problem 21 BB

Step1 of 3:

We have from Different Times Researchers measured skulls from different time periods in an attempt to determine whether interbreeding of cultures occurred. Results are given below (based on data from Ancient Races of the Thebaid,by Thomson and Randall-Maciver, Oxford University Press).

4000b.c.(Maximal Skull Breadth): =30,=131.37 mm,=5.13 mm

a.d.150 (Maximal Skull Breadth):  = 30, =136.17 mm, =5.35 mm

Step2 of 3:

We need to test the claim that the variation of maximal skull breadths in 4000B.C.is the same as the variation in a.d.150 by using level of significance.

Step3 of 3:

The appropriate null and alternative hypothesis are given by

With...

Step 2 of 3

Step 3 of 3

##### ISBN: 9780321836960

Since the solution to 21 BB from 9.5 chapter was answered, more than 365 students have viewed the full step-by-step answer. Elementary Statistics was written by and is associated to the ISBN: 9780321836960. The answer to “Skull Measurements from Different Times Researchers measured skulls from different time periods in an attempt to determine whether interbreeding of cultures occurred. Results are given below (based on data from Ancient Races of the Thebaid,by Thomson and Randall-Maciver, Oxford University Press). Use a 0.05 significance level to test the claim that the variation of maximal skull breadths in 4000B.C.is the same as the variation ina.d.150.4000b.c.(Maximal Skull Breadth): n=30,x=131.37 mm,s=5.13 mma.d.150 (Maximal Skull Breadth): n = 30,x =136.17 mm,s =5.35 mm” is broken down into a number of easy to follow steps, and 80 words. The full step-by-step solution to problem: 21 BB from chapter: 9.5 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. This full solution covers the following key subjects: skull, maximal, variation, breadth, occurred. This expansive textbook survival guide covers 121 chapters, and 3629 solutions.

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