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Mathematics
11th
grade
Week 1. Lesson 1 Random Variables and Probability Distributions
10 questions
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- 1. Multiple Choice
Classify the random variables as discrete or continuous: The number of defective computers produced by a manufacturer
Discrete
continuous
either
neither
- 2. Multiple Choice
Classify the random variables as discrete or continuous: The weight of new-born each year in a hospital
Discrete
continuous
either
neither
- 3. Multiple Choice
Classify the random variables as discrete or continuous: The speed of a car
Discrete
continuous
either
neither
- 4. Multiple Choice
Classify the random variables as discrete or continuous: The time needed to finish the test.
Discrete
continuous
either
neither
- 5. Multiple Choice
Which of the following is NOT a discrete random variable?
Height of eggplant as measured each day.
A number of refrigerators sold each day.
A number of late comers in going to school each day.
A number of people who went to the Rizal Park from Monday to Friday.
- 6. Multiple Choice
Which of the following is a discrete random variable?
Jose has four sisters.
Jose is 163 cm tall.
Jose weighs 68 kilograms.
Jose ran 300 meters in one and a half minutes.
- 7. Multiple Choice
Which of the following is NOT a continuous random variable?
The height of the airplane’s flight.
The amount of liquid on a container.
The length of time for the check up in the hospital.
The number of clients of a certain insurance company each day.
- 8. Multiple Choice
Which of the following variables is a discrete random variable?
The amount of unleaded gasoline in a Suzuki car.
The temperature of a cup of coffee served at a coffee shop.
The number of boys in a randomly selected two-child family.
The average amount spent on electric bill every month of May by a randomly selected household in Quezon Province.
- 9. Multiple Choice
You decided to order a pizza but you have to choose the type of crust and the toppings. If there are only six possible combinations of ordering a pizza, from which of the following should you choose?
Crust: thin or deep dish
Toppings: cheese or pepperoni
Crust: thin or deep dish
Toppings: cheese, bacon, or pepperoni
Crust: thin or deep dish
Toppings: cheese, bacon, sausages, or pepperoni
Crust: thin or deep dish
Toppings: cheese, bacon, sausage, pepperoni, or hotdog
- 10. Multiple Choice
You decided to conduct a survey of families with two children. You are interested in counting the number of girls (out of 2 children) in each family. Is this a random variable?
Yes, it is a random variable.
No, it is not a random variable.
Maybe, it is a random variable.
Cannot be determined.
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