Sodium in Breakfast Cereal. Use the following information for Exercises 78–83. A random sample of 23 breakfast cereals containing sodium had a mean sodium content per serving of 192.39 grams. Assume that the population standard deviation equals 50 grams. We are interested in whether the population mean sodium content per serving is less than 210 grams.

Question 9.188

image 82. Refer to the hypothesis test in Exercise 79. What if the population standard deviation of 50 grams had been a typo, and the actual population standard deviation was smaller? How would this have affected the following?

  1. The standard deviation of the sampling distribution
  3. -value
  4. The conclusion