Let x be a random variable that represents hemoglobin count (hc) in grams per 100 milliliters of whole blood. then x has a distribution that is approximately normal, with population mean of about 14 for healthy adult women. suppose that a female patient has taken 10 laboratory blood tests during the past year. the hc data sent to the patient's doctor are as follows. 15 18 16 20 15 12 15 18 15 11 (i) use a calculator with sample mean and standard deviation keys to find x and s. (ro

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

If angle b measures 25°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units

Given: m zade = 60° and m2cdf = (3x + 15) prove: x = 15