Question

Test the hypothesis that there is a difference in average birthweight in grams between mothers who smoked and mothers who did not smoke. Significance level= 0.05

What is the null and alternative hypothesis

Answer 1

Solution:

Claim : there is a difference in average birth weight in grams between mothers who smoked and mothers who did not smoke.

The null and alternative hypothesis are

H₀:  ₁ =  ₂

H_a : _1    2  

{ Valid signs in H₀ are = , and

Valid signs in H_A   are , < and >

}