Sampling the amount of a certain trace element in the blood of men and women have yielded different values based on the given data what is the likelihood that the population means of concentrations of the element are the same for men and women?
Random samples of 75 male and 50 female donors yield concentration means of 33 and 28 ppm, respectively.
Also, a standard deviation of 14.1 ppm (parts per million) for male blood donors and 14.1 ppm for female donors
Find the test statistics
Given,
, ,
, ,
we know that the test statistic is given by,
Sampling the amount of a certain trace element in the blood of men and women have...
= 40 adults were selected from A small amount of the trace element selenium, 50-200 micrograms (ug) per day, is considered essential to good health. Suppose that random samples of n, = n, two regions of the United States and that a day's intake of selenium was recorded for each person. The mean and standard deviation of the selenium daily intakes for the 40 adults from region 1 = 140.5 and s, = 17.1 µg. Find a 95% confidence interval...
explaim the mechanisms amd toxological effects if type 1 diabetes in this article Exposure to arsenic in drinking water is associated with increased prevalence of diabetes. We previously reported an association of diabetes and urinary concentration of dimethylarsinite (DMAS"), a toxic product of arsenic methylation by arsenic (+ 3 oxidation state) methyltransferase (AS3MT). Here we examine associations between AS3MT polymorphism, arsenic metabolism and diabetes. Fasting blood glucose, oral glucose tolerance and self-reported diagnoses were used to identify diabetic individuals. Inorganic...