Using a metric line, convert the following metric measurement. (remember to use the same number of significant figures as in the original measurement.) 505 kl expressed in la. 50,500 lb. 505,000 lc. 5,050 ld. 50.5 l

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