The Manager of the Quality Department for a Tire Manufacturing

question 180

True/False

The manager of the quality department for a tire manufacturing company wants to know the average tensile strength of rubber used in making a certain brand of radial tire. The population is normally distributed and the population standard deviation is known. The manager uses a z test to test the null hypothesis that the mean tensile strength is less than or equal to 800. The calculated z test statistic is a positive value that leads to a p-value of .067 for the test.
-If the significance level is .05,the null hypothesis would be rejected.

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Definitions:

Modern Humans

Homo sapiens, the species of hominids that represents the current form of humans characterized by advanced cognitive abilities and culture.

Chordates

A large phylum of animals that includes all vertebrates and some invertebrates, characterized by having a notochord at some stage in their development.

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, which extends from the brainstem down the back, and is encased in the vertebral column, transmitting nerve signals between the brain and the rest of the body.

Brain

The organ located in the head of an animal that coordinates its behavior, processes sensory information, and is the center of perception, memory, thought, and emotion.