1. It displays the probability that a parameter will fall between a pair of values around the mean
A. Margin of Safety
B. Confidence Interval
C. Standard error
D. None of the above
2. Which value will be at the center of a confidence interval?
A. Margin of error
B. Population parameter
C. Point estimate
D. None of the above
3. A sample of 350 people from city C contained 70 smokers. Find an estimate of the proportion of smokers in the city
A. 0.4
B. 0.5
C. 0.2
D. 2
4. It refers to the percentage of probability, or certainty, that the confidence interval would contain the true population parameter when you draw a random sample many times
A. Interval estimation
B. Standard ratio
C. Confidence level
D. None of the above
5. In a random sample of 1,000 families from the city of Delhi, it was found that the average of income as obtained from the sample is Rs. 2,000/-, it is further known that population S.D. is Rs. 258. Find 95% confidence interval to population mean.
A. Rs. 1979 to Rs. 2021
B. Rs. 1984.01 to Rs. 2015.99
C. Rs. 1970 to Rs. 2000
D. Rs. 1847 to Rs. 2100
6. The upper and lower boundaries of interval of confidence are known as
A. Error based limits
B. Confidence limits
C. Estimate limits
D. Marginal limits
7. While interviewing 350 people in a city, the number of smokers was found to be 70. Obtain 99% lower confidence limit and the corresponding upper confidence limit to the proportion of smokers in the city.
A. 0.1876 and 0.2020
B. 0.1786 and 0.2109
C. 0.1689 and 0.2142
D. 0.1786 and 0.2214
8. It is a function of Confidence Co-efficient
A. Confidence Interval
B. Point estimation
C. Standard error
D. None of the above
9. In a random sample of 19586 people from a town, 2358 people were found to be suffering from T.B. With 98% Confidence, find the limits between which the percentage of the population of the town suffering from T.B. lies.
A. 11.50 and 12.58
B. 10.51 and 17.25
C. 12.57 and 14.23
D. 13.08 and 12.97
10. A famous shoe company produces 80,000 pairs of shoes daily. From a sample of 800 pairs, 3% are found to be of poor quality. Find the limits for the number of substandard pair of shoes that can be expected when the Confidence Level is 0.99.
A. 1000 and 3200
B. 1162 and 3638
C. 1105 and 3785
D. 1238 and 3426
11. Any hypothesis that contradicts a null hypothesis is known as an
A. Relative hypothesis
B. Alternative hypothesis
C. Second hypothesis
D. Contradictory hypothesis
12. A is one that specifies the population distribution completely.
A. Simple hypothesis
B. Composite hypothesis
C. Straight hypothesis
D. None of the above
15. It is denoted by H0.
A. Alternate hypothesis
B. Simple hypothesis
C. Null hypothesis
D. None of the above
16. For a parameter whose value is unknown, the belief or claim that parameter is classified is
A. Hypothesis testing
B. Parameter claim testing
C. Primary limit testing
D. None of the above
17. An assumption or statement regarding the parameter or the form of a population distribution
A. Null hypothesis
B. Alternate hypothesis
C. Nil hypothesis
D. None of the above
18. Procedures enabling us to decide whether to accept or reject a hypothesis is known as
A. Estimation testing
B. Parameter claim testing
C. Test of hypothesis
D. None of the above
19. A statement whose validity is tested on the basis of a sample is called
A. Null hypothesis
B. Composite hypothesis
C. Simple hypothesis
D. Statistical hypothesis
20. A statement made about a population for testing purpose is called
A. Hypothesis
B. Statistic
C. Estimate
D. Level of confidence