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

question 68

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

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Definitions:

Median

The middle value in a data set when the values are arranged in ascending or descending order.

Major League Baseball

A professional baseball organization that is the oldest of the four major professional sports leagues in the United States and Canada.

Histogram

A graphical representation of the distribution of numerical data, where the data is grouped into bins and the frequency of the data in each bin is depicted by the height of the bar.

Salaries

Salaries refer to the regular payments or compensation that employees receive from their employers in exchange for their work.