Public Health and Nutrition
A study was conducted to compare the amount of salt in potato chips. Random samples of four varieties were obtained and the amount of salt in each one-ounce portion of potato chips was recorded (in mg of sodium). The data are given in the following table.
Conduct an analysis of variance test to determine whether there is any evidence that the population mean amount of salt per serving is different for at least two varieties. Use a = 0.05.
a. State the four parts of the hypothesis test.
b. Complete an ANOVA table.
c. Draw the appropriate conclusion.