A researcher randomly selects and measures the volumes of the contents of 11 bottles of cough syrup. Assume the sample is taken from a normally distributed population. The 90% confidence interval for the population standard deviation sigma is (0.0203,0.0406). The population standard deviation of the volumes of the bottles' contents should be less than 0.032 fluid ounce. Does the confidence interval for sigma suggest that the variation in the volumes of the bottles' contents is at an acceptable level? Explain your reasoning.

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

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 f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)