The Manufacturer of a New Chewing Gum Claims That at Least

question 92

Essay

The manufacturer of a new chewing gum claims that at least eight out of ten dentists surveyed prefer their type of gum and recommend it for their patients who chew gum.An independent consumer research firm decides to test their claim.The findings in a sample of 400 doctors indicate that 76% do actually prefer their gum.Is this evidence sufficient to doubt the manufacturer's claim? Use α = 0.05.

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Definitions:

Nervous Tissue

Tissue that contains nerve cells (neurons), which conduct impulses, and neuroglia, which support, protect, and provide nutrients to neurons.

Stimuli

External or internal changes that affect the responses of living organisms.

Epithelial

Referring to epithelium, a layer of cells covering the body surfaces, cavities, and organs, serving as a barrier and interface with the environment.

Metabolic Wastes

Substances left over from metabolic processes (like urea, carbon dioxide) that need to be excreted from the body.