Scores on the Math SAT Are Normally Distributed $s = 75$

question 85

Multiple Choice

Scores on the math SAT are normally distributed. A sample of 28 SAT scores had a standard deviation $s = 75$ . Construct a $99 \%$ confidence interval for the population standard deviation $\sigma$ .

• A) \(55.58 < \sigma < 112.42\)
• B) \(56.87 < \sigma < 108.60\)
• C) \(54.57 < \sigma < 110.40\)
• D) \(55.31 < \sigma < 113.41\)

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Definitions:

Lewis Terman

An American psychologist best known for his revision of the Stanford-Binet IQ test and his studies on gifted children.

Binet-Simon

An early psychological test developed to measure intelligence.

WAIS-IV

Wechsler Adult Intelligence Scale - Fourth Edition, a commonly used test designed to measure intelligence and cognitive ability in adults and older adolescents.

WPPSI-R

The Wechsler Preschool and Primary Scale of Intelligence-Revised, a standardized test designed to measure the intellectual functioning of children aged 2 years and 6 months to 7 years and 7 months.