=====Mathematics 241 - Spring 2015=====

==== Homework ====

**Section 28.2**

Exercise Set A: 1, 2, 3, 4, 5, 6, 7, 9

**Section 28.3**

Exercise Set B: 3

And:

The following table gives the number of deaths due to accidental falls in the United States for 1970:
^ Month ^ Number of Deaths ^
|January |  1668  |
|February |  1407  |
|March |  1370  |
|April |  1309  |
|May |  1341  |
|June |  1338  |
|July |  1406  |
|August |  1446  |
|September |  1332  |
|October |  1363  |
|November |  1410  |
|December |  1526  |

Test the hypothesis that deaths due to accidental falls are spread uniformly throughout the year.

Answer:

The value of the chi-square test statistics is $\chi^2 = 75.4273$. Using a chi-square distribution with 11 degrees of freedom, the //p//-value is $1.22 \times 10^{-11}$. Hence the data provide very strong evidence against the hypothesis that deaths due to accidental falls occur uniformly throughout the year.