The average luggage weight of a female airline passenger was not more than 22 kilograms ten years ago. THAI airways think that the weight of luggage has now increased. The survey from 64 female passengers found x ̅ = 22.5. Assume that population standard deviation is known at σ = 5. Help the company test this claim at α=0.05 level. 

1.What is the p-value for this test? 

2.Will you accept or reject null hypothesis? 

3.What does have a result in the 2nd answer mean?