It is known that the average spring flight delay at a region…

It is known that the average spring flight delay at a regional airport is 42 minutes with variance 36 minutes². A new carrier, Lucky Clover Airlines, claims that its delays are shorter. Last month, across 49 Lucky Clover flights, the average delay was 40.5 minutes. a) Is there evidence to support the claim that Lucky Clover passengers wait less? Use α = 0.05.b) Give a 95% confidence interval for the new average flight delay time.

The data in the following table indicate the results of a su…

The data in the following table indicate the results of a survey of students asked which destination they would prefer for a spring break class trip from the 5 choices below. Determine the values for a relative frequency column.   Destination Frequency Relative Frequency Savannah 4 Charleston 9 Miami 11 San Diego 8 Austin 3