Uzal ve Ul Ulleren sizes.
2. (2 points). To construct a test for the means of 2 populations when the standard deviations of the
two populations are unknown and it can be assumed the 2 populations have equal variances, we mus
use at distribution with lett be the size of sample 1 and on the size of sample 2),

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.

Abakery recorded the number of muffins and bagels it sold for a seven day period. for the data presented, what does the value of 51 summarize? a) mean of bagels b) mean of muffins c) range of bagels d) range of muffins sample # 1 2 3 4 5 6 7 muffins 61 20 32 58 62 61 56 bagels 34 45 43 42 46 72 75

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.