Problem 40E

A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows:

(a) Check the assumption of normality for rod diameter.

(b) Calculate a 95% two-sided confidence interval on mean rod diameter.

(c) Calculate a 95% upper confidence bound on the mean. Compare this bound with the upper bound of the two-sided confidence interval and discuss why they are different.

317 9/13/16 No method of constant stimuli, method of adjustment, method of limits Pick 1 essays to write and upload in blackboard and study the essays (Intro and conclusion paragraphs) 30 points Potentials = Electrical Separation of charge – potential Movement of charge – electrical Neurons: Binary Message Electrostatic Pressure Firing – Action Potential (AP) o K+ concentrated outside o Na+ concentrated inside o +40mV (positive environment) Not Firing – Resting Potential (RP) o Na+ concentrated outside o K+ concentrated inside o -70mV (negative environment)