1.Is a variable where the information or data can take infinitely many values.
A.Continuous variable B.Discrete variable C.Quantitative
D.Qualitative variable
2.Which of the following statement describe a continuous random variable?
A.The number of students present in a Class Temperance
B.The average distance travelled by a tricycle in a month
C.The number of motorcycle owned by a randomly selected household
D.The number of girls taller than 5 feet in a random sample of 6 girls
3.This is a variable that can be discrete or continuous.
A.Random sample
B.Random variable
C.Random notation
D.Random elimination
4.Which of the following is a variable whose value is obtained by measuring?
A.Continuous
B.Discrete
C.Interval
D.Normal
5.Which of the following is NOT a discrete variable?
A.Number of book per student
B.Number of green marbles in the box
C.The number of arrivals of customers in the clinic between 8:00 a.m to 4:00 p.m.
D.The weight of a box of soft drinks labeled 12 ounces.
6.A drawer has 2 red ties, 3 black ties and 5 blue ties.A tie is picked at random.What is the total number of possible outcomes?
A.2
B.3
C.5
D.10
7.Which of the following statement describe a continuous random variable?
A.The number of students present in a class
B.The average distance traveled by a jeep in a week
C.The number of correct guesses on a multiple choice test
D.The number of women taller than 68 inches in a random sample of 5 Women
8.Which of the following is a continuous random variable?
A.Height of sunflower as measured each day
B.Number of gadgets a business sell per day
C.Number of people attending mass every Sunday
D.Number of people eating at the restaurant everyday
9.Which of the following is discrete random variable?
A.Ana weighs 64 kg
B.Maria is 160 cm tall
C.Rose has two brother
D.Jose ran 100 meters in 10.2 seconds
10.Which of the following variable is discrete random variable?
A.Lifetime of a AAA battery
B.The amount of gasoline in a car
C.Number of goals of a football team
D.The time it takes to commute to work
11.You decide to conduct a survey of families with two children.You are interested in counting the number of boys (out of 2 children) in each family.If the statement above shows a random variable,then what are the possible values?
A.Its value can be 1 or 2.
B.Its value can be 0, 1, or 2.
C.Its value can be 2 or 4.
D.None, since it is not a random variable.
For numbers 12-13.Suppose two balls are drawn in succession without replacement from an urn containing 6 blue balls and 5 red balls.
12.How many possible outcomes will occur from the experiment?
A.2
B.4
C.6
D.8
13.Let Z be the random variable representing the number of blue balls.What are the possible values of the random variables?
A.0, 1
B.0, 1, 2
C.1, 2, 3
D.0, 1 , 2, 3
For numbers 14-15.Suppose three laptops are tested.Let D represent the defective laptop and N for the non-defective laptop.
14.How many possible outcomes will occur from the experiment?
A.3
B.4
C.8
D.9
15.If we let X be the random variable representing the number of non-defective laptops.What are the possible values of the random variable?
A.0, 1
B.0, 1, 2
C.1, 2, 3
D.0, 1, 2, 3 ​