The Center Line (P-Bar) for a P-Chart Is 0

question 67

Multiple Choice

The center line (p-bar) for a p-chart is 0.50 with an ULC = 0.70 and a LCL = 0.35. The results of the next eight sample means are 0.45, 0.60, 0.39, 0.44, 0.48, 0.58, 0.54, and 0.64. Which of the following actions should be taken in this scenario?

• A) Nothing-the process is in control.
• B) Investigate assignable causes because four observations are above the center line.
• C) Investigate assignable causes because there is a bad trend (run).
• D) Investigate assignable causes because four of the eight samples are below the center line.

Identify factors influencing the geographic distribution of species.

Calculate population density.

Comprehend the role and effects of migration in animal populations.

Understand factors contributing to human population growth dynamics.

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Definitions:

Structural Isomers

Molecules that have the same molecular formula but differ in the arrangement of atoms.

Geometric Isomers

Molecules that have the same formula and sequence of bonded atoms, but differ in the three-dimensional orientations of their atoms in space.

Enantiomers

Two isomeric chemical compounds that are mirror images.

Carotenoids

A group of yellow to orange plant pigments synthesized from isoprene subunits; include carotenes and xanthophylls.