A Simple Random Sample of 20 Third-Grade Children from a Certain

question 82

Multiple Choice

A simple random sample of 20 third-grade children from a certain school district is selected,and each is given a test to measure his/her reading ability.You are interested in calculating a 95% confidence interval for the population mean score.In the sample,the mean score is 64 points and the standard deviation is 12 points.What is the margin of error associated with the confidence interval?

• A)2.68 points
• B)4.64 points
• C)5.62 points
• D)6.84 points

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Definitions:

Economically Inefficient Outcomes

Occurs when resources are not utilized or allocated optimally, leading to waste or a loss in potential value.

Paired-Choice Vote

A voting system where voters choose between pairs of candidates in a series of rounds, narrowing down the options to a winner.

Ranked Preferences

A method of ordering options or choices based on their desirability or importance to an individual or group.

Public Good

An item that cannot be withheld from people and does not diminish in availability due to individual consumption, thereby accessible to all without limiting others.