Your airline would like to initiate service between SLC and JFK. The scheduling department has asked you to look at the average scheduled block times (scheduled arrival - scheduled departure) used by existing carriers in the market, JetBlue (B6) and Delta (DL), to determine the optimum block duration as it relates to arrival variance (actual arrival - scheduled arrival), A0 (% of flights arriving on time or early) and A14 (% of flights arriving less than 15 minutes late). Download the data here Download Download the data here and analyze it using Microsoft Excel as required to answer the questions.

Mktcarrier	Year	Avg. Sched_Block	Avg. Arrivalvariance	A0%	A14%
JetBlue (B6)	2013	373.4	19.3	42.5%	62.0%
2014	373.0	14.1	49.4%	76.5%
2015	372.9	11.7	48.0%	69.7%
2016	375.1	23.3	34.6%	55.3%
Delta (DL)	2013	385.5	0.4	70.0%	85.9%
2014	382.7	5.3	65.1%	81.9%
2015	383.0	5.6	59.5%	80.3%
2016	388.3	-1.6	69.2%	86.0%

What is the probability that scheduled block is unreliable (the null hypothesis cannot be rejected) in predicting A14?