Chapter PVII, Problem 13RE

To determine

To perform an appropriate test of hypothesis.

Answer to Problem 13RE

There is no evidence to support that the way the hospital deals with twin pregnancies has changed.

Explanation of Solution

Given:

  

Calculation:

The null and alternative hypotheses:

H₀: There is no association between the years and outcome of pregnancy.

Ha: There is an association between the years and outcome of pregnancy.

Using excel,

  

  ${\chi }^2=0.69$

P-value = 0.9526

Decision: P-value > 0.05, fail to reject H0.

Conclusion: There is no evidence to support that theway the hospital deals with twin pregnancies has changed.