UndilutedNG.com

STAT 122/224

0%
0
Created by Oladeji Timilehin Daramola

STA 122/224

NOTE: The quiz is meant for revision purpose only!

Join the 100 level group to access other quiz CLICK TO JOIN

 

Join the 200 level group to access other quiz CLICK TO JOIN

1 / 25

In study of 100 students that had been awarded Ondo State scholarship, it was found that 40 had part-time jobs,25 had made the Dean’s list the previous semester, and 15 had both apart time job and had made the Dean’s list. What is the probability that a student had a part-time or was on the Dean’s list?

2 / 25

A probability near 1 indicates an event is

3 / 25

What is the class size of a class whose upper boundary is 10.5 and lower boundary is 4.5?

4 / 25

Suppose that we have a samples pace S={E1,E2,E3},where E1,E2 and E3 denote the experimental outcomes and the following probability assignments are given for the sample events P(E1)=0.3,P(E2)=0.25,P(E3)=0.45.LetA={E1,E2}.Find P(A).

5 / 25

A mode:

6 / 25

The expected value of X having binomial distribution with parameters n and p is

7 / 25

What is the class mark of a class whose upper limit is 11.5 and lower limit is 7.2?

8 / 25

With the help of histogram we can draw

9 / 25

Examples of Designs of Experiment are except-----------

10 / 25

Two events A and B are mutually exclusive if

11 / 25

Generally, ordinal variables are best displayed visually with:

12 / 25

A random variable y has a pdf given below f(y)=k(y2+4) for 0

13 / 25

The variance:

14 / 25

If two variables are absolutely independent of each other the correlation between them must be,

15 / 25

Suppose P(A)=0.70,P(B)=0.20 and P(A∩B)=0.15.Find P(A∪B)

16 / 25

If the largest value of a data set is doubled ,which of the following is false?

17 / 25

Suppose out of 10 objective questions in STA 122, five are to be answered. How many different sets of questions are possible?

18 / 25

A fair die is thrown twice and the two outcomes are added. What is the probability of getting an odd number? Hint: There are 36 outcomes in all.

19 / 25

Two events A and B are said to be INDEPENDENT if.......

20 / 25

These to fall possible values of a random variable X is called

21 / 25

The number of samples of five light-bulbs that can be selected from a lot of 20 bulbs is?

22 / 25

A fair coin is flip twice  .The outcomes are {HH,HT,TH,TT}. Each has the same probability . Which of the following options satisfies that the event H1 (where the first flip comes up heads) is independent from the event H2 (where the second flip comes up heads).

23 / 25

When are events said to be collectively exhaustive ? This is when

24 / 25

Suppose two events E and F with non-zero probabilities are mutually exclusive. Then

25 / 25

The variance measures deviation around the :

Your score is

UndilutedNG.com

To Top
%d