匿名用户问：

美国大学 数理统计

A large number of complaints have been received in the past six months regarding
airlines losing flier's baggage. The airlines claim the problem is much smaller than
newspaper articles have indicated. In fact, one airline spokesman claimed that fewer than
1% of all bags fail to arrive at their destinations with the passengers. To check this claim,
800 bags were selected at various airports in the United States when they were checked
with this airline. Of those 6 failed to reach their destinations when their owners arrived
a). At 5% level of significance, is there sufficient evidence of to support the airline
spokesman's claim? Your conclusion must be in terms of the P-Value as well as
setting up a Reiection Region. You must show all necessary work.
b). Which statistical distribution should be applied in this situation and why? Explain
carefully.
c). What type of error is possible and describe this error in terms of the problem?
d). Based on a 95% confidence level, what is the best case and worst case scenario
regarding the actual percentage of bags that fail to arrive at their destinations with the
passengers?
e). Carefully interpret this interval estimation
f).
Using the results of part(d), explain carefully whether there is sufficient evidence to
support the airline spokesman's claim? Explain carefully.