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131 Exercise 1:0ma's Pretzels . 131-1 Blanche McCarthy is the marketing director of Oma's Own snack food company. Oma's makes toasted pretzel snacks, and advertises that these pretzels contain an average of 112 calories per serving. 131-2 In a recent test, an independent consumer research organization conducted an experiment to see if this claim was true. Somewhat to their surprise, the researchers found that the average calorie content in a sample of 32 bags was 102 calories per serving. The stande deviation of the sample was 19. 131-3 Blanche would like to know if the calorie content of Oma's pretzels really has siri'l' changed, so she can market them appropriately. With 99% condence, do these data WEE (1W indicate that the pretzels' calorie content has changed? 9\" - No '3. - Yes C. - The answer cannot be determined from the information provided. 131-4 You begin any hypothesis test by formulating a null and an alternative hypothesis. The null hypothesis states that the population mean is equal to the initial value. In this problem, the null hypothesis is that the caloric content in the actual population is what Oma's has always advertised