A bakery is analyzing whether cookie diameter varies with vertical position in an oven, between the “bottom rack” and the “top rack”. An experiment was run, with twenty (20) cookies baked in each position. Assume the variance in diameter is equal for both rack positions. Which statistical test should be used to determine whether the mean cookie diameter from the “bottom rack” is the same as the mean cookie diameter from the “top rack”?

A Run Chart

A bakery is analyzing whether cookie height varies with the machine that forms the dough round. There are two forming machines. An experiment was run, with twenty (20) cookies from both forming machine. Assume the variance in height is equal for both machines. Which statistical test should be used to determine whether the mean cookie height from Machine 1 is the same as the mean cookie height from Machine 2?

A bakery is analyzing whether cookie diameter varies with baking temperature. An experiment was run, with (20) cookies baked at a “low” temperature and (20) cookies baked at a “high” temperature. Assume the variance in height is equal for both temperatures. Which statistical test should be used to determine whether the mean cookie height from the “low” temperature is the same as the mean cookie height from the “high” temperature?

By the end of the DMAIC Analyze phase, you should

Simple Linear Regression

Two punch presses are used to produce a part for automotive transmissions. Scrap costs for one critical dimension are excessive.To determine whether there is a difference in variability between the two presses, a Six Sigma project team ran a small experiment. The Minitab output for the statistical analysis is shown below. Using a significance level of α = 0.05, the team concludes that:

A bakery is analyzing whether cookie height varies with the machine that forms the dough round. There are two forming machines. An experiment was run, with twenty (20) cookies from both forming machine. Which statistical test should be used to determine whether the variability in cookie height from Machine 1 is the same as the variability in cookie height from Machine 2?

List the 3  components  of the fluid mosaic model of an animal cell plasma membrane.

A team at a popular magazine was formed to increase subscription response rate to direct mail offers. The team has identified eight factors in the design and mailing of the offer that could potentially affect response rate. Which tool should the team use next in order to understand the cause & effect relationship between the eight factors and subscription response rate?