a Problem 1 Satisfaction with banking A bank conducts a survey in which it randomly samples 400 of its customers. The sur vey asks the customers which way they use the bank the most: (1) interacting with a teller at the bank, (2) using ATMs, or (3) using the bank's online banking service. It also asks their level of satisfaction with the service they most often use (on a scale of 0 to 10 with 0 : very poor and 10 : excellent). Does mean satisfaction differ according to how they most use the bank? a Identifying notation, state the null and alternative hypotheses for conducting an ANOVA with data from the survey. b Report the df values for this ANOVA. Above what F test statistic values give a Pvalue below 0.05 ? c For the data, F = 0.46 and the Pvalue equals 0.63. What can you conclude? d What were the assumptions on which the ANOVA was based? Which assumption is the most important? e Based on your answer from c, do you think it is necessary to conduct Tukey's multiple comparison? Why or why not