Use the Following to Answer Questions

question 14

Multiple Choice

Use the following to answer questions :
In a hypothesis test with hypotheses and ,a random sample of 20 elements selected from the population produced a mean of 67.8 and a standard deviation of 11.9.The significance level is 5%.Assume the population is normally distributed.
-What is the critical value of t?

• A)-1.645
• B)-1.725
• C)-1.729
• D)-2.093

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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.