For which situations would it be appropriate to calculate a probability about the difference in sample means? Both population shapes are unknown. 14 = 50 and n2 = 100.
Population 1 is skewed right and population 2 is approximately Normal. n1 = 50 and n2 = 10.
Both populations are skewed right. ny = 5 and n2 = 10.
Population 1 is skewed right and population 2 is approximately Normal. n1 = 10 and n2 = 50.
Both populations have unknown shapes. n = 50 and n2 = 100.
Both populations are skewed left. ny = 5 and n2 = 40.

Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?

Jasmine wants to eat at 8: 00pm her meal takes 65mins to cook what time does she need to put the meal in the oven

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.