Discussion:
Q: An outbreak of food-borne sickness was attributed to Salmonella enteritidis. It determined that the source of the illness was spinach. Nine production runs are sampled from the spinach processing company the spinach to determine the level of Salmonella enteritidis. Levels in MPN/g are as follows:
.793
.519
.392
.419
.593
.142
.329
.691
.231
Determine whether the average level of Salmonella enteritidis in the spinach is greater than .3 MPN/g. Set α = .01.