_____1. Which of the following is not a true statement? A. The value of a random variable could be zero. B. Random variables can only have one value. C. The probability of the value of a random variable could be zero. D. The sum of all the probabilities distribution is always equal to one. _____2. Which of the following is a discrete random variable? A. The average weight of female athletes B. The number of COVID-19 patients in a hospital C. The amount of paint used in repainting a building
_____1. Which of the following is not a true statement?
A. The value of a random variable could be zero.
B. Random variables can only have one value.
C. The probability of the value of a random variable could be zero.
D. The sum of all the probabilities distribution is always equal to one.
_____2. Which of the following is a discrete random variable?
A. The average weight of female athletes
B. The number of COVID-19 patients in a hospital
C. The amount of paint used in repainting a building
D. The average amount of electricity consumed in a quarantine area
_____3. Maria is a grade 11 student and decided to conduct a survey of
families with two children in their children as a requirement to one of
their subjects. She is interested in counting the number of boys (out of 2
children) in each family. Is this a random variable, and if it is, what are
all its possible values?
A. No, it is not a random variable, since it is nor random
B. Yes, it is a random variable, and its values are 0, 1, or 2
C. Yes, it is a random variable, and its values can be 2 or 4
D. Yes, it is a random variable, and its values can be 1 and 2
_____4. Which of the following is NOT a property of a random variable?
A. A random variable cannot be negative
B. A random variable can be discrete or continuous
C. The sum of the probabilities of a random variable is equal to 1
D. A random variable represents numerical outcomes for different
situations or
_____5. You decide to collect a bunch of cans of soda and measure the
volume of soda in each can. Let x = the number of mL of soda in each
can. What type of variable is x?
A. x is a constant
B. x is not a random variable
C. x is a discrete random variable
D. x is a continuous random variable
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
