Hypotheses

Question 1

One way ANOVA

Answer 1

H0: miu 1 = miu 2 = … = miu i
Ha: at least one miu differs

Question 2

Factorial ANOVA / interaction

Answer 2

H0: miu 1 = miu 2 = … = miu i
Ha: at least one miu differs

Question 3

Normal regression

Answer 3

Model testing:
H0: beta 1 = beta 2 = … = beta k = 0
Ha: at least one beta doesn’t equal 0

Coefficient testing:
H0: beta i = 0
Ha: beta i doesn’t equal 0

Question 4

Logistic regression- Chi square test

Answer 4

H0: newly added PVs, compared to the null, have no difference on OV (beta 1 = beta 2 = … = beta k = 0)
Ha: at least one of the PVs influences the OV (at least one beta not equal to 0)