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Q 1/20
Score 0
1. It is a random variable that has countable set of possible outcomes.
30
probability distribution
discrete random variable
random variable
continuous random variable
Q 2/20
Score 0
2. The height and weight of a student-respondent represent what type of random variable?
30
continuous random variable
probability distribution
discrete random variable
random variable
20 questions
Q.
1. It is a random variable that has countable set of possible outcomes.
1
30 sec
Q.
2. The height and weight of a student-respondent represent what type of random variable?
2
30 sec
Q.
3. If three coins are tossed, which is not a possible value of the random variable for the number of heads?
3
60 sec
Q.
4. Consider an experiment. If P(X) = x/6 , which of the following values of X will make it a probability distribution?
4
60 sec
Q.
5. The sum of all the individual probabilities of a discrete probability distribution is equal to___.
5
30 sec
Q.
6. P(1) =10/33, P(2) = x ,P(3) =12/33, are the individual probabilities of a given experiment. What should be the value of x to make it a probability distribution?
6
120 sec
Q.
7. Which of the following is not a discrete random variable?
7
30 sec
Q.
8. Three coins are tossed and the random variable Y gives the number of tails. What could be the values of random variable Y?
8
30 sec
Q.
9. Three coins are tossed and the random variable Y gives the number of tails. find the value of P(0) is ____.
9
120 sec
Q.
10. Three coins are tossed and the random variable Y gives the number of tails. The value of P(2) should be____.
10
120 sec
Q.
11. The sum of the product of each value of a discrete random variable X and its probability is referred to as its _____.
11
30 sec
Q.
12. Consider the given discrete probability distribution. Find the probability that M equals 5.
12
300 sec
Q.
13. Mang Memong’s bakery has determined a probability distribution for the number of ensaymada it sells in a given day. The distribution is as follows: Find the number of ensaymada that Mang Memong’s bakery expects to sell in a day.
13
300 sec
Q.
14. Let V is denoted as the number of heads in three tosses of a coin. Determine the variance of this random variable.
14
300 sec
Q.
15. A random variable Y can take only two values, 2 and 5 such that P(2) = 0. 40 and P(5)= 0.60. Determine the mean of Y.
15
120 sec
Q.
16. Consider the probability distribution below. The table shows the probability distribution of students’ scores in a 15-item quiz in Filipino.
What is the probability that Z is equal to 5?
16
120 sec
Q.
17. Consider the probability distribution below. The table shows the probability distribution of students’ scores in a 15-item quiz in Filipino.
What is the probability that students will get a score lower than 10?
17
120 sec
Q.
18. Consider the probability distribution below. The table shows the probability distribution of students’ scores in a 15-item quiz in Filipino.
What is the probability that the students will get a score between 0 and 15?
18
120 sec
Q.
19. Consider the probability distribution below. The table shows the probability distribution of students’ scores in a 15-item quiz in Filipino.
What is the average score of the students in a 20-item quiz in Filipino?
19
120 sec
Q.
20. Consider the probability distribution below. The table shows the probability distribution of students’ scores in a 15-item quiz in Filipino.
What is the variance of the students’ scores?
