Anton works at First National Bank. His employer offers him a pension retirement plan which will be 2.35% of his average salary for the last
five years of employment for every year worked. Anton is planning on
retiring at the end of this year after 28 years of employment. His
salaries for the last five years are $82,000; $83,300; $85,000;
$90,500; and $95,000. What is his average salary over the last 5
years?

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables