(Solved): One consumer protection agency wanted to check whether the proportions of luggage lost between two ...

One consumer protection agency wanted to check whether the proportions of luggage lost between two airline companies differ or not. A sample of 600 luggage from airline company

showed that 12 are lost. Another sample of 700 luggage from airline company

showed that 13 luggage are lost. (a) What is the point estimate of the difference between the two population proportions? (b) Construct a

confidence interval for the differences in the proportions of all luggage between airline companies

and

. (c) Testing at

significance level, can you conclude that the proportions of all luggage lost between airline companies

and

are different?