Why do scientists need a system of measurements to measure physical quantities? a) scientists speak many different languages b) each country wants its own set of measurement standards c) measurements are seldom shared with scientists in different countries d) scientists want to share measurements data that everyone can understand

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397