A radio station claims that the amount of advertising per hour of broadcast time has an average of 15
minutes and a standard deviation equal to 1.6 minutes.
You listen to the radio station foſ 1 hour, at a randomly
selected time, and carefully observe that the amount
of advertising time is equal to 8 minutes. Calculate the
Z-score for this amount of advertising time.

Which is the length of the hypotenuse of the triangle a. 94ft b. 214 ft c. 33ft d. 37 ft

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.

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?