Here are summary statistics for randomly selected weights of newborn girls: nequals247, x overbarequals30.4 hg, sequals7.2 hg. Construct a confidence interval estimate of the mean. Use a 90% confidence level. Are these results very different from the confidence interval 28.8 hgless thanmuless than31.0 hg with only 19 sample values, x overbarequals29.9 hg, and sequals2.8 hg? What is the confidence interval for the population mean mu?

Select the correct answer from the drop-down menu. this graph represents the inequality x+2< 4,2x> 3,x+6< 12,2x> 12

Determine the relationship of ab and cd given the following points

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.