Your company has decided that it will need $10,000 in 4 years to replace office equipment. You invest in a fund that pays 2..25% per year. How much do you need to put into this account every month to have enough money at the end of the 4 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