Table 4 Summary of Hypotheses Testing

H		Results
H1	i) Travel with sales agents can positively affect the add-on buying probability.	Supported
	ii) Travel with sales agents can negatively affect the purchase interval.	Supported
H2	i) A large first contract amount can positively affect the add-on buying probability.	Not Supported
	ii) A large first contract amount can negatively affect the purchase interval.	Not Supported
H3	i) The past year’s purchase record can positively affect the add-on buying probability.	Supported
	ii) The past year’s purchase record can negatively affect the purchase interval.	Supported