PLEASE help me figure out how to solve these they are due at the end of the day! thank you in advance!!

2 Exercise 7-11 Algo 7.5 Beer bottles are filled so that they contain an average of 455 ml of beer in each bottle. Suppose that the amount of beer in a bottle is points normally distributed with a standard deviation of 6 ml. [You may find it useful to reference the z table.] a. What is the probability that a randomly selected bottle will have less than 452 ml of beer? (Round intermediate calculations to at least 4 decimal places, "z" value to 2 decimal places, and final answer to 4 decimal places.) eBook Probability Hint References b. What is the probability that a randomly selected 6-pack of beer will have a mean amount less than 452 ml? (Round intermediate calculations to at least 4 decimal places, "z" value to 2 decimal places, and final answer to 4 decimal places.) Probability c. What is the probability that a randomly selected 12-pack of beer will have a mean amount less than 452 ml? (Round intermediate calculations to at least 4 decimal places, "z" value to 2 decimal places, and final answer to 4 decimal places.) Probability