Marketing and Consumer Behavior The predominant acid in frozen concentrated orange juice (FCOJ) is citric acid, and the amount is usually given as a percentage. Degrees Brix is a measure of the total soluble solids in FCOJ and is also a percentage. The Brix/acid ratio is computed by simple division, and 12 is considered an ideal ratio. A random sample of FCOJ was obtained from different sellers, and the Brix/acid ratio was measured for each. These measurements were used to construct the following normal probability plot:
Does this plot suggest the data are from a non-normal distribution? Justify your answer.