stuck on c

Suppose that blood chloride concentration ( mmol/L ) has a normal distribution with mean 107 and standard deviation 2. (a) What is the probability that chloride concentration equals 108? Is less than 108? Is at most 108? (Round your answers to four decimal places.) equals 108 less than 108 at most 108 (b) What is the probability that chloride concentration differs from the mean by more than 1 standard deviation? (Round your answer to four decimal places.) Does this probability depend on the values of and ? , this probability depend on the values of and . (c) How would you characterize the most extreme 0.4% of chloride concentration values? (Round your answers to two decimal places.) The most extreme 0.4% of chloride concentrations values are those less than * mmol/L and greater than * mmol/L. You may need to use the appropriate table in the Appendix of Tables to answer this