A Red Ball and 18 White Balls Are in a Box

question 167

Multiple Choice

A red ball and 18 white balls are in a box. If two balls are drawn, without replacement, what is the probability of getting 2 white W balls? ​

• A) Pr(W first ∩ W second) =
• B) Pr(W first ∩ W second) = 1
• C) Pr(W first ∩ W second) =
• D) Pr(W first ∩ W second) =
• E) Pr(W first ∩ W second) =

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Definitions:

IQ Scores

Numerical measurements derived from standardized tests designed to assess human intelligence and cognitive abilities.

WAIS-IIIR

The third revision of the Wechsler Adult Intelligence Scale, a tool used for measuring human intelligence.

Stanford-Binet

A standardized test that measures intelligence and cognitive abilities in children and adults, developed initially by Alfred Binet and later refined at Stanford University.

WISC-III

The Wechsler Intelligence Scale for Children-Third Edition, a tool used to assess the intelligence of children ages 6 through 16.