In Problem, test the hypothesis that the daily number of failures has a Poisson distribution.
A random sample of 500 migrant families was classified by region and income (in units of $1,000). The following data resulted.
|
Income
|
South
|
North
|
|
0-10
|
42
|
53
|
|
10-20
|
55
|
90
|
|
20-30
|
47
|
88
|
|
>30
|
36
|
89
|
Determine the p-value of the test that a family's income and region are independent.