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Get Full Access to Elementary Statistics - 12 Edition - Chapter 9.5 - Problem 21bb
Get Full Access to Elementary Statistics - 12 Edition - Chapter 9.5 - Problem 21bb

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# BB Skull Measurements from Different Times Researchers

ISBN: 9780321836960 18

## Solution for problem 21BB Chapter 9.5

Elementary Statistics | 12th Edition

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Problem 21BB

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:

Solution 21 BB Step 1 The given problem explain about skull measurements. From the given information we know that we want to test the claim that the variation of maximal skull breadths in 4000 B.C. is the same as the variation in A.D. 150. Here, first sample is A.D. 150 group because its standard deviation is larger and second sample is 4000 B.C. Then hypothesis is H 0 =1 2 H 1 = 1 / 2 Where and are the variance of population. 1 2 Then the given data is Maximum Skull Breadth n =30 1 A.D. 150 : x = 136.17 mm 1 s1=5.35 mm n2=30 4000 B.C. : x2=131.37 mm s2=5.13 mm

Step 2 of 2

##### ISBN: 9780321836960

Since the solution to 21BB from 9.5 chapter was answered, more than 780 students have viewed the full step-by-step answer. The answer to “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” is broken down into a number of easy to follow steps, and 83 words. Elementary Statistics was written by and is associated to the ISBN: 9780321836960. 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. The full step-by-step solution to problem: 21BB from chapter: 9.5 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM.

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