
Random Variables Review Game
Authored by Nicholas Limone
Mathematics
11th - 12th Grade
Used 6+ times

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33 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A marketing survey compiled data on the number of cars in households. If X = the number of cars in a randomly selected household, and we omit the rare cases of more than 5 cars, then X has the following probability distribution:
X 0 1 2 3 4 5
P(X) 0.24 0.37 0.20 0.11 0.05 0.03
What is the probability that a randomly chosen household has at least two cars?
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The table represents the probability of guessing correct on a 5 question true-false quiz. Find the probability for at least 4 questions correct.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A stockbroker estimates that at the end of the year, there is a 40% chance a stock will be worth $50, a 35% chance it will be worth $60 and a 25% chance it will be worth $70.
What expected value does this broker assign to this stock's end-of-the-year price?
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Determine which of the following distribution is NOT a probability distribution. (Remember that a valid probability distribution must add up to 1)
A
B
C
D
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
State whether it is Discrete or Continuous;
A film critic's rating of a film, 0 to 4 stars
Discrete
Continuous
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
State whether it is Discrete or Continuous;
The speed of a car
Discrete
Continuous
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
State whether it is Discrete or Continuous;
The sum rolled on a pair of dice
Discrete
Continuous
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