With Computer Security Always a Hot-Button Issue, Demand Is Growing

question 155

Multiple Choice

With computer security always a hot-button issue, demand is growing for technology that authenticates and authorizes computer users. The following table gives the authentication software sales (in billions of dollars) , including projections, from 1999 through 2004. (Here, x = 0 represents 1999.) Find an equation of the least-squares line for these data. Please round the coefficients in your equation to three decimal places. Use the result to estimate the sales for 2005, assuming the projection is accurate.

• A) y = 0.749x + 2.262; $6.779 billion
• B) y = 0.735x + 2.273; $6.683 billion
• C) y = 0.735x + 2.273; $6.720 billion
• D) y = 0.749x + 2.262; $6.756 billion

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Definitions:

Event A

A specific occurrence or happening, often denoted in probability and statistics as a measurable outcome.

Mutually Exclusive

A condition in which the occurrence of one event or situation precludes the occurrence of another.

Compatible Events

Events in probability theory that can occur at the same time.

Mutually Exclusive

Describes a condition in probability and statistics where two events cannot occur at the same time; the occurrence of one event excludes the possibility of the other event occurring.