=====Mathematics 341 - Spring 2013=====

====Homework====

**Chapter 5**

Exercise: 5.28

Also:

1. Yule (in 1900) presented the following table of data on the heights of 210 married couples:

^ ^  Tall wife  ^  Medium wife  ^  Short wife  ^
^Tall husband |  18|  28|  19|
^Medium husband |  20|  51|  28|
^Short husband  |  12|  25|  9|

Test the hypothesis that the heights of husbands and wives are independent.

2. In a study of the relationship between tonsil size and the carrier for streptococcus pyogenes, 1398 school children were examined, with the following results:

^ ^  Normal  ^  Enlarged  ^  Much enlarged  ^
^Carrier present  |  19|  29|  24|
^Carrier absent  |  497|  560|  269|

Test the hypothesis that tonsil size and the absence or presence of the carrier are independent.