A purchasing agent for Rapidtest Instrument Labs is trying to determine the best delivery provider to use for delivering instruments to two hospitals after they have been repaired or recalibrated. She has developed an index, on a scale of $15(5$ is outstanding$)$ that weights the delivery quality $($time$,$ service, and cost$).$ Three delivery services, A$,$ B$,$ and C$,$ are candidates for a long term blanket contract with Rapidtest. As shown on the following table, data were gathered on $10$ test deliveries to both customers. An ANOVA procedure was conducted on these data and the following results were obtained: