Question 3 [10 marks]: The amount of sodium in a randomly selected 8-02 serving of chicken noodle soup has a normal distribution, with mean u = 343 mg and standard deviation 0 = 21. Suppose an 8-oz serving is randomly selected. a. [2 marks] What is the probability that the amount of sodium is more than 325 mg? Give your answer to at least four decimal places. b. [2 marks] What is the probability that the amount of sodium is between 330 and 360 mg? Give your answer to at least four decimal places. c. [3 marks] Find a symmetric interval about the mean such that 90% of all 8-0: servings have amounts of sodium in that interval. Give your answer to at least two decimal places. d. [3 marks] Suppose a randomly selected 8-oz serving has a sodium level of 390 mg. Is there any evidence to suggest the mean sodium level u = 343 mg is false