STA301-Statistics and Probability Quiz MCQS #Objective #Questions #Finalterm
1. Which of the following is the property of hypergeometric experiment?
- p remains constant from trial to trial
- successive trials are independent
- sampling is performed without replacement
- n is not fixed
2. If the first-moment ratio is less than 0, then the distribution will be:
- positively skewed
- symmetrical
- negatively skewed
- None
3. Poisson distribution can be used to approximate the hypergeometric distribution when:
- p>0.05
- p<0.05
- p>0.10
- p<0.10
4. ___ is used when we are dealing with proportions to find the probabilities:
- Normal distribution
- t-distribution
- Both Z & t distribution
- F distribution
5. Total no. of possible samples of size 3 (with replacement) from the population of size 6, will be:
- 256
- 196
- 216
- 325
6. In sampling from a large population with sigma=20, the standard error of the mean is found to be 2. The size of the sample used is:
- 100
- 40
- 10
- 20
7. In sampling from a large population with σ=60. The size of the sample used is 100, the value of the standard error will be:
- 4
- 42
- 15
- 6
8. The number of parameters in a normal distribution is(are):
- 1
- 2
- 3
- 4
9. In hypergeometric distribution probability of success always:
- is constant from trial to trial
- varies from trial to trial
- sometimes varies and sometimes is constant
- None
10. In hypergeometric distribution; experiment can be repeated a
- fixed number of times
- variable number of times
- depends upon the situation
- None
11. In a binomial experiment, the probability of success changes on
-
Each trial
-
Second trial
-
10th trial
-
30th trial
12. The range of the binomial distribution is:
-
0, 1, 2, … , 100
-
0, 1, 2, …, n
-
0, 1, 2, …, x
-
1, 2, …, n
13. The number of typing errors per page in a book follows.
-
Normal Distribution
-
Poisson process
-
Binomial distribution
-
Hypergeometric distribution
14. The central limit theorem states that the mean of the sampling distribution of the means is equal to the population
- Standard deviation
- Standard error
- Random error
- Mean
