Retail Price Data for N = 60 Hard Disk Drives $y =$

question 96

Multiple Choice

Retail price data for n = 60 hard disk drives were recently reported in a computer magazine. Three variables were recorded for each hard disk drive: $y =$ Retail PRICE (measured in dollars)
$x _ { 1 } =$ Microprocessor SPEED (measured in megahertz)
(Values in sample range from 10 to 40 )
$x _ { 2 } =$ CHIP size (measured in computer processing units)
(Values in sample range from 286 to 486 )
a first-order regression model was fit to the data. Part of the printout follows:


Interpret the interval given in the printout.

• A) We are \(95 \%\) confident that the average price of all hard drives with 33 megahertz speed and 386 CPU falls between \(\$ 3,943\) and \(\$ 4,987\).
• B) We are \(95 \%\) confident that the price of a single hard drive falls between \(\$ 3,943\) and \(\$ 4,987\).
• C) We are \(95 \%\) confident that the average price of all hard drives falls between \(\$ 3,943\) and \(\$ 4,987 .\)
• D) We are \(95 \%\) confident that the price of a single hard drive with 33 megahertz speed and 386 CPU falls between \(\$ 3,943\) and \(\$ 4,987\).

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Definitions:

Irreducible Function

A fundamental role or purpose of a system or structure that cannot be simplified or reduced to its components without losing its essence.

Emotional Support

Assistance provided through empathy, understanding, and care to help someone manage their emotions.

Investing In Children

The allocation of resources towards the well-being, education, and development of children, with the belief that such investments yield long-term societal benefits.

Emotional Support

Assistance provided through empathy, concern, and encouragement to help individuals cope with emotional distress or difficulties.