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676
No. of chairs 1 2 3 4 5 6 7
Frequency 2 7 5 4 9 7 6

Find the median of the distribution

  • A. 9
  • B. 6.5
  • C. 5
  • D. 4.5
  • E. 4
View Answer & Discuss (11) WAEC 1991
677

If two events are mutually exclusive, their intersection is empty. This means that there are no outcomes that are common to both events. In probability terms, if X and Y are mutually exclusive events, then:

Pr(X ∩ Y) = 0

  • A. 0
  • B. 2/15
  • C. 11/15
  • D. 4/15
  • E. 1
View Answer & Discuss (3) WAEC 1991
678

If events X and Y are mutually exclusive, P(X) = 1/3 and P(Y) = 2/5, P(X∪Y) is

  • A. o
  • B. 2/15
  • C. 4/14
  • D. 11/15
  • E. 1
View Answer & Discuss (3) WAEC 1991
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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679

A box contains 2 white and 3 blue identical marbles. If two marbles are picked at random, one after the other without replacement, what is the probability of picking two marbles of different colors?

  • A. 2/3
  • B. 3/5
  • C. 2/5
  • D. 7/20
  • E. 3/10
View Answer & Discuss WAEC 1991
680

Mrs. Jones is expecting a baby. The probability that it will be a boy is 1/2 and probability that the baby will have blue eyes is 1/4. What is the probability that she will have a blue-eyed boy?

  • A. 1/8
  • B. 1/4
  • C. 3/8
  • D. 1/2
  • E. 3/4
View Answer & Discuss (1) WAEC 1991
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