Whats the best way to solve this questions ?

Question 12 5 pts The annual salaries at a particular company are approximately normally distributed with a mean of $100,000 and a standard deviation of $16,000. Find the proportion of employees that earn between $70,000 and $110,000. Round your answer to 4 decimal places. Question 13 5 pts Suppose a random sample of n = 100 measurements is selected from a population with mean u = 301 and standard deviation o = 51. Calculate the value of the standard error of the sampling distribution of sample means, ox . OF = Round your answer to 3 decimal places