A Student Answers 26 Questions Correctly

question 141

Multiple Choice

A student answers 26 questions correctly.Is that enough to convince you that he is not merely guessing? Explain.

• A)No; if the student were guessing,we would expect him to answer 15 questions correctly with a standard deviation of 11.25.26 is 0.98 standard deviations above the expected value.That would not be an unusual result.
• B)Yes; if the student were guessing,we would expect him to answer 15 questions correctly with a standard deviation of 3.10.26 is 3.5 standard deviations above the expected value.That would be an unusual result.
• C)Yes; if the student were guessing,we would expect him to answer 15 questions correctly with a standard deviation of 3.35.26 is 3.3 standard deviations above the expected value.That would be an unusual result.
• D)Yes; if the student were guessing,we would expect him to answer 15 questions correctly with a standard deviation of 3.87.26 is 2.8 standard deviations above the expected value.That would be an unusual result.
• E)No; if the student were guessing,we would expect him to answer 15 questions correctly with a standard deviation of 3.35.26 is 3.3 standard deviations above the expected value.That would not be an unusual result.

Distinguish between types of social movements and their approaches to change.

Comprehend the influence of collective behavior on public opinion and social movements.

Examine the distinction between material and nonmaterial social change.

Understand the emergence and impact of informal social movements on local issues.

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Definitions:

Degrees Of Freedom

The number of independent values or quantities that can vary in the analysis without violating any constraint.

Sample Size

The number of observations or data points collected in a study or used in a statistical analysis, crucial for the validity and reliability of results.

T-Values

Statistics used in T-tests that compare the means of two groups. They indicate how many standard deviations an observed sample mean is from the null hypothesis mean.

Z-Values

Standardized scores that indicate how many standard deviations an element is from the mean.