You Want to Estimate the Average GMAT Score for All

question 45

Multiple Choice

You want to estimate the average GMAT score for all students who took the Logitano GMAT Preparation course during the past 2 years.You select a random sample of 100 such students from a comprehensive list of all students who took the course over the last two years and find that the average GMAT score for the sample was 1040.Suppose now you build a 95% confidence interval estimate of the average score for the population of Logitano students represented here and the interval turns out to be 1040 ± 10 points.How would you interpret your result?

• A)We can be 95% confident that the interval 1030 to 1050 contains the average score for the entire population of Logitano students.
• B)The score for 95% of all Logitano students will be between 1030 and 1050.
• C)There is a 5% chance that not all Logitano students scored between 1030 and 1050.
• D)We can be 95% confident that all of Logitano students scored between 1030 and 1050.
• E)Ninety-five percent of the scores for all Logitano students will be between 1030 and 1050.

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Definitions:

Mortality Rate

A measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time.

Hallucinate

To experience perceptions of objects, sounds, or sensations that have no external source, often associated with certain mental health conditions or substance use.

Delirium

An acute, often sudden confusion characterized by altered consciousness, cognitive impairment, and a fluctuation in awareness, typically resulting from an underlying medical condition.

Penetrating Head Injuries

Injuries where an object pierces the skull and enters the brain, potentially causing severe damage and requiring immediate medical attention.