+3 votes
in Class 12 by kratos

To test the effectiveness of vaccination against Tuberculosis, the following table was obtained.

Test at 1% level of significance whether vaccination and ** of Tuberculosis are independent.

1 Answer

+5 votes
by kratos
 
Best answer

χ2 – Test for attributes:

H0: Vaccination and ** of T.B. are independent.

H1 : Vaccination and ** of T.B. are deperdent. {Upper tail test}

The given data can be written in a 2 × 2 – contingency table as below:

Under H0, the χ2 – test statistic is:

At α = 1% for l.d.f the upper tail critical value k2 = 6.63.

Here χ2cal **** rejection region

∴ H0 is rejected and H1 is accepted.

Conclusion: Vaccination and ** of T.B. are dependent.

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