Suppose Taxi Fares from Logan Airport to Downtown Boston Is

question 97

Multiple Choice

Suppose taxi fares from Logan Airport to downtown Boston is known to be normally distributed and a sample of seven taxi fares produces a mean fare of $22.31 and a 95% confidence interval of [$20.5051, $24.2091]. Which of the following statements is a valid explanation of the confidence interval.

• A) 95% of all taxi fares are between $20.51 and $24.21.
• B) We are 95% confident that a randomly selected taxi fare will be between $20.51 and $24.21.
• C) The mean amount of a taxi fare is $22.31, 95% of the time.
• D) We are 95% confident that the average taxi fare between Logan Airport and downtown Boston will fall between $20.51 and $24.21.

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Definitions:

Grade Distribution

The spreading out of marks achieved by students in a course, often visualized using graphs or tables to understand the performance and grading trends.

Significance Level

The threshold below which the p-value of a statistical test must fall for the null hypothesis to be rejected, indicating statistical significance.

Sample

A subset of a population selected for measurement, observation, or questioning, to provide statistical information about the population.

Guidelines

Recommendations or principles designed to guide decisions or actions in specific contexts.