Guide to Using Minitab 14 For Basic Statistical Applications To Accompany Business Statistics: A Decision Making Approach, 8th Ed. Chapter 8: Estimating Single Population Parameters By Groebner, Shannon, Fry, & Smith Prentice-Hall Publishing Company Copyright, 2011

Chapter 8 Minitab Examples Histogram Histogram Histogram Nagel Beverage Company Interval Estimation Interval Estimation Interval Estimation Interval Estimation Heritage Software

Histogram Construction Nagel Beverage Company Issue: The manager is interested in viewing the graphical characteristics of the sample fill amounts in soft-drink cans. Objective: Use Minitab to help construct a histogram of the sample fill volumes. Data file is Nagel-Beverage.MTW

Open File Nagel-Beverage.MTW File contains sample data for 100 cans. Histogram – Nagel Beverage

Select Graph - Histogram Histogram – Nagel Beverage

Select Simple Histogram – Nagel Beverage

Specify the variable to be graphed, Click OK. Histogram – Nagel Beverage

Finished Histogram Histogram – Nagel Beverage

Interval Estimation Heritage Software Issue: The company has service representatives who answer calls from customers. The managers are interested in estimating the mean call time Objective: Use Minitab to help construct a confidence interval for the population mean call time. Data file is Heritage.MTW

Open File Heritage.MTW File contains sample data for 25 calls Interval Estimation – Heritage Software

Use Stat – Basic Statistics – 1-Sample t Interval Estimation – Heritage Software

Select variable for analysis – Click on Options Interval Estimation – Heritage Software

Enter confidence level Interval Estimation – Heritage Software Click OK - OK

95 % Confidence Interval Interval Estimation – Heritage Software