= 0.05 A sample of size 50 from machine A has a mean of 18.2 and standard deviation 3.1. A sample of size 40 from machine B has mean 17.6 and standard deviation 2.8. Do these data indicate that the population for machine A has a larger mean? Assume the populations are normal.
A. yes
B. no
= 0.05 A machine tool vender wants to sell an injection molding machine. The current machine produces 3.2% defectives. A sample of 1100 from the vender 's machine has 2.9% defective. Do these numbers indicate that the proposed machine has a lower rate of defectives?
A. yes
B. no
The calculation of Column Total Times Row Total divided by Grand Total yields expected values from what type of chart?
A. Pareto Chart
B. Sakami Table
C. Contingency Table
D. None
A Personal Trainer was assessing her workout class participants for their body fat content and had to include data for her analysis. One of the columns listed the range of weight of the people included in the studies. This required plotting a Histogram of the weight of the people assessed for their body fat content. While drawing the Histogram the x-axis contained a certain scale of data. Pick the scale of data that is appropriate for Histograms.
A. Ordinal Scale Data
B. Ration Scale Data
C. Nominal Scale Data
D. Interval Scale Data
How many experimental runs exist in a Full Factorial and fully randomized design for 4 factors with 2 replicates for the Corner Points and no Center Points? The factors in the experiment are only at 2-levels.
A. 10
B. 32
C. 256
D. 64
The Lean toolbox includes all of these items except ________________.
A. Mistake Proofing
B. Visual Factory
C. Design of Experiments
D. Inventory Management
If you can Poka-Yoke a defect out of the process entirely then you do not need use SPC on the characteristic of interest in the defect.
A. True
B. False
Range Charts are the technique used to determine if ______________ are occurring within the subgroups of the SPC Charts.
A. Common Causes
B. Special inspections
C. Unnatural forces
D. Special Causes
Data being used in the initial set-up of a process are assumed to have a normal distribution. If the nominal (target) is set at the center of the distribution, and the specification limits are set at ? from the center, then the Cpkis equal to
A. 0.25
B. 1.00
C. 1.33
D. 1.67