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GMAT Statistics and Probability — practice questions — page 4

Explore 198 free Statistics and Probability questions in GMAT Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Statistics and Probability questions and exercises with answers

Showing questions 91–120 of 198.

For any event E, the value of P(E) lies between:Read the answer and worked solution →Match the probability termRead the answer and worked solution →Impossible or certain?Read the answer and worked solution →True or false about probabilityRead the answer and worked solution →Complete the probability scaleRead the answer and worked solution →An analyst measures how certain an outcome of a repeated activity is. That measure is called:Read the answer and worked solution →A die is rolled once. The set containing 1, 2, 3, 4, 5 and 6 is called the:Read the answer and worked solution →Probabilities cannot take just any value. Every probability lies between:Read the answer and worked solution →A fair coin is flipped 20,000 times and heads comes up close to half the time. That result illustrates that probability is the long-term:Read the answer and worked solution →Rolling a fair die once, the probability of getting a four is 1/6 because there are six outcomes and:Read the answer and worked solution →An event A has probability 0.5. That means A is equally likely to occur or:Read the answer and worked solution →The event consisting of everything that is not A is written A prime and called the:Read the answer and worked solution →Because those two events cover everything between them, their probabilities must add to:Read the answer and worked solution →A card is drawn, and we ask the probability it is a king given that it is a face card. This is a:Read the answer and worked solution →A die is rolled twice, and the first roll tells us nothing about the second. Such events are:Read the answer and worked solution →Two events cannot both happen on the same trial, such as rolling a two and rolling a five at once. They are:Read the answer and worked solution →To find the chance of A or B happening, add their probabilities and then subtract the probability that:Read the answer and worked solution →For two mutually exclusive events, that subtraction step changes nothing because the overlap probability is:Read the answer and worked solution →To find the chance that A and B both occur, the multiplication rule multiplies P(B) by:Read the answer and worked solution →For independent events that conditional term simplifies, so the chance of both is found by multiplying:Read the answer and worked solution →A sample space can be shown by listing outcomes, by a Venn diagram or by a:Read the answer and worked solution →A name is drawn from a hat and then put back before the next draw. That sampling is done:Read the answer and worked solution →If the name is kept out instead, each member of the population can be chosen:Read the answer and worked solution →Drawing two cards from a 52-card deck without replacement, the denominator for the second draw becomes:Read the answer and worked solution →Drawing one card from a full deck, the probability it is a spade is 13 out of:Read the answer and worked solution →Uppercase letters such as A and B are used in probability notation to represent:Read the answer and worked solution →Catch the probability termsRead the answer and worked solution →Pop the sample space viewsRead the answer and worked solution →Run the probability gatesRead the answer and worked solution →Slice the probability wordsRead the answer and worked solution →

Worked practice questions

For any event E, the value of P(E) lies between:

  1. 0 and 6
  2. 1 and 10
  3. 0 and 1
  4. 1 and 2
Show answer and solution

Correct answer: C. 0 and 1

1. No event can be less likely than impossible. 2. None can be more likely than certain. 3. So P(E) always lies between 0 and 1. 4. The answer is 0 and 1. _Source: syllabus Mathematics, Ch 7 'The Mathematics of Maybe: Introduction to Probability'_

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Match the probability term

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Matching pairs
  1. Left
    Probability 0
    Right
    The event is impossible
  2. Left
    Probability 1
    Right
    The event is certain
  3. Left
    Probability 0.5
    Right
    Both outcomes equally likely
Instructions
Match each term to what it means.
_Source: syllabus Mathematics, Ch 7 'The Mathematics of Maybe: Introduction to Probability'_

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Impossible or certain?

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Left
Impossible
Items
  1. Item
    Rolling a 7 on die
    Answer
    Impossible
  2. Item
    Winning unplayed
    Answer
    Impossible
  3. Item
    Probability of 0
    Answer
    Impossible
  4. Item
    Die shows under 7
    Answer
    Certain
  5. Item
    Probability of 1
    Answer
    Certain
  6. Item
    Sun rises tomorrow
    Answer
    Certain
Right
Certain
Instructions
Swipe left for impossible, right for certain.
_Source: syllabus Mathematics, Ch 7 'The Mathematics of Maybe: Introduction to Probability'_

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