DLP Projectors Are Used in the Majority of Cinema Projection

question 32

Multiple Choice

DLP projectors are used in the majority of cinema projection systems and require a special light bulb to display a picture. Assume that the average life of a DLP bulb is 2,000 hours and that this failure time follows the exponential distribution. What is the probability that a randomly selected bulb will last more than 2,500 hours?

• A)0.2031
• B)0.2865
• C)0.1365
• D)0.4492

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Definitions:

Herfindahl-Hirschman Index

A concentration measure used to calculate the level of competition within an industry by summing the squares of the market shares of all firms within the industry.

Concentration Ratio

A measure used in economics to assess the degree of market concentration, often indicating the combined market share of the top firms in an industry.

Herfindahl-Hirschman Index

A measure of market concentration to evaluate the level of competition within an industry.

Herfindahl-Hirschman Index

A measure used to determine the level of competition within an industry, calculated by summing the squares of the market shares for each firm within the industry.