A Coffee-Dispensing Machine Is Supposed to Deliver 8 Ounces of Liquid

question 89

Multiple Choice

A coffee-dispensing machine is supposed to deliver 8 ounces of liquid into each paper cup,but a consumer believes that the actual mean amount is less.The consumer obtained a sample of 49 cups of the dispensed liquid with average of 7.75 ounces.If the sample variance of the dispensed liquid delivered per cup is 0.81 ounces,and α = 0.05,the appropriate decision is ________.

• A) increase the sample size
• B) reduce the sample size
• C) fail to reject the 8-ounces claim
• D) maintain status quo
• E) reject the 8-ounces claim

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Definitions:

Kirk's Dik-dik

A small antelope species found in eastern and southwestern Africa, known for its monogamous pairs and distinctive whistle-like alarm call.

Genetic Monogamy

A mating system in which individuals mate exclusively with one partner over their lifetime, and parentage analyses confirm genetic fidelity.

Mammals

Warm-blooded vertebrates characterized by the presence of mammary glands, which females use to feed their young, and a body covered in hair or fur.

Birds

Warm-blooded, egg-laying vertebrates characterized by feathers, beaks, and the capability of flight in most species.