Tim mows neighborhood lawns for extra money. suppose that he would be willing to mow one lawn for $1010, a second lawn for $1818, and a third lawn for $2020. also suppose that three neighbors are interested in having their lawns mowed. mrs. jones would be willing to pay $ to have her lawn mowed, mr. wilson would be willing to pay $2828, and ms. smith would be willing to pay $2020.

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