A Consumer Product Magazine Recently Ran a Story Concerning the Increasing

question 59

Short Answer

A consumer product magazine recently ran a story concerning the increasing prices of digital cameras. The story stated that digital camera prices dipped a couple of years ago, but now are beginning to increase in price because of added features. According to the story, the average price of all digital cameras a couple of years ago was $215.00. A random sample of n = 200 cameras was recently taken and entered into a spreadsheet. It was desired to test to determine if that average price of all digital cameras is now more than $215.00. Find the large-sample rejection region appropriate for this test if we are using α = 0.05. A) Reject $\mathrm { H } _ { 0 }$ if $\mathrm { z } < - 1.645$ or $\mathrm { z } > 1.645$ .
B) Reject $\mathrm { H } _ { 0 }$ if $\mathrm { z } < - 1.96$ or $\mathrm { z } > 1.96$ .
C) Reject $\mathrm { H } _ { 0 }$ if $\mathrm { z } > 1.645$ .
D) Reject $\mathrm { H } _ { 0 }$ if $\mathrm { z } < - 1.96$ .

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Definitions:

Copy A

This term is often associated with tax forms, where Copy A is the official part of a form sent to a tax authority, like the IRS, detailing financial information.

Form W-2

A tax form used in the United States to report wages paid to employees and the taxes withheld from them.

Wages

Compensation received by employees for services performed, usually based on hours worked or a fixed salary.

Household Workers

Employees who perform domestic service in a home, such as cleaners, maids, and gardeners.