1-The average high-school teacher annual salary is $43,000. Let teacher salary be normally distributed with a standard deviation of $18,000.

a. What percent of high school teachers make between $40,000 and $50,000? Your answer is.Round to 3 decimals and keep '0' before the decimal point.

b. What percent of high school teachers make more than $80,000? Your answer is.Round to 3 decimals and keep '0' before the decimal point.

2-The monthly sales of mufflers in the Richmond, Virginia, area follow the normal distribution with a mean of 1200 and a standard deviation of 225. The manufacturer would like to establish inventory levels such that there is only a 5 percent chance of running out of stock. Where should the manufacturer set the inventory levels?Please round it to an integer number as mufflers doesn't come in a fractional number. Don't insert comma in the number.