Manufacturers of perishable foods often use preservatives

Chapter 15, Problem 54E

(choose chapter or problem)

Manufacturers of perishable foods often use preservatives to retard spoilage. One concern is

that too much preservative will change the flavor of the food. An experiment is conducted using

portions of food products with varying amounts of preservative added. The length of time until

the food begins to spoil and a taste rating are recorded for each portion of food. The taste rating

is the average rating for three tasters, each of whom rated each food portion on a scale from 1

(bad) to 5 (good). Twelve measurements are shown in the following table. Use a nonparametric

test to determine whether spoilage times and taste ratings are correlated. Give the associated

p-value and indicate the appropriate conclusion for an \(\alpha=.05\) level test.

Equation transcription:

Text transcription:

alpha=.05