The manager at the Lawrence National Bank is interested in determining whether there is a difference in the meantime that customers spend completing their transactions depending on which of four tellers they use. To conduct the test, the manager has selected simple random samples of 15 customers for each of the tellers and has timed them (in seconds) from the moment they start their transaction to the time the transaction is completed and they leave the teller station. The manager then asked one of her assistants to perform the appropriate statistical test. The assistant returned with the following partially completed ANOVA table}l Sumrrrarnrr Groups Count Sum Average Variance Teller I l5 3.04.1.9 327.4 Teller 2 l5 3.0l 5.5 4?2.2 Tc Her .1 l5 3.421? 445.5 Tc Her 4 l5 4.0724 019.4 ANOVA Source of Critical Venetian SS df MS Fratio p-value F-value Belwenciroupri 36.5300 0.0000 23694 Within Group}; Total 69.031? 59 (.l (.l (a) State the appropriate null and alternative hypothesesxl {b} Fill in the missing parts of the ANOVA table and perform the statistical hypothesis test using c: = 0.05_