A laboratory wants to acquire a new centrifugal pump for ammonia. The specification indicates that the flow rate be more than 5 gallons per minute (gpm). In a preliminary study, 8 runs were made. The average flow rate was 6.5 gpm and the standard deviation was 1.9 gpm. If the mean flow rate is found to meet the specification, the pump will be put into service. If the null hypothesis is set to H0:u = 5gpm , what is the most appropriate alternative ?
