Aphysicist examines 28 sedimentary samples for nitrate concentration. the mean nitrate concentration for the sample data is 0.443 cc/cubic meter with a standard deviation of 0.0305. determine the 95% confidence interval for the population mean nitrate concentration. assume the population is approximately normal. step 2 of 2 : construct the 95% confidence interval. round your answer to three decimal places.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.