A manufacturing company knows that their machines produce parts that are defective on occasion.They have 4 machines producing parts, and want to test if defective parts are dependent on the machine that produced it.They take a random sample of 321parts and find the following results.Test at the 0.05 level of significance.

Machine 1

Machine 2

Machine 3

Machine 4

Defective

10

15

16

9

Non-Defective

72

75

66

58

Enter the test statistic - round to 4 decimal places.