An Online Catalog Company Wants On-Time Delivery for at Least $\mathrm { H } _ { 0 } : p = 0.90$

question 349

Multiple Choice

An online catalog company wants on-time delivery for at least 90% of the orders they ship. They Have been shipping orders via UPS and FedEx but will switch to a more expensive service (ShipFast) if there is evidence that this service can exceed the 90% on-time goal. As a test the
Company sends a random sample of orders via ShipFast, and then makes follow-up phone calls to
See if these orders arrived on time. Which hypotheses should they test?

• A) \(\mathrm { H } _ { 0 } : p = 0.90\)
• \(\mathrm { H } _ { \mathrm { A } } : p < 0.90\)
• B) \(\mathrm { H } _ { 0 } : p < 0.90\)
• \(\mathrm { H } _ { \mathrm { A } } : p = 0.90\)
• C) \(\mathrm { H } _ { 0 } : p = 0.90\)
• \(\mathrm { H } _ { \mathrm { A } } : p > 0.90\)
• D) \(\mathrm { H } _ { 0 } : p > 0.90\)
• \(\mathrm { H } _ { \mathrm { A } } : p = 0.90\)
• E) \(\mathrm { H } _ { 0 } : p = 0.90\)
• \(\mathrm { H } _ { \mathrm { A } } : p \neq 0.90\)

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Definitions:

Broca's Aphasia

A condition characterized by difficulties in speech production, often resulting from damage to the Broca's area of the brain.

Wernicke's Aphasia

Wernicke's aphasia is a type of language disorder caused by damage to the Wernicke's area of the brain, characterized by difficulty understanding spoken language and producing meaningful language.

Monolinguals

Individuals who speak or use only one language as their means of communication.

Bilinguals

Individuals who are proficient in two languages, capable of communication in both with a high degree of fluency.