Question

To test the effectiveness of inoculation against Cholera the following table was obtained:

Test at 5% level of significance whether inoculation and ** of Cholera are independent.

Answer 1

H0 : Inoculation and ** of cholera are independent

H1 : Inoculation and ** of cholera are dependent

The given data can be presented in the form of 2 × 2 contingency table as below

For 1 d.f at 5% level of significance the upper tail critical value k= 3.84

Here χ2cal < k / χ2cal **** in (AR) acceptance region.

∴ H0 is accepted.

Conclusion: Inoculation and ** of cholera are independent.