| 1 |
Level of significance is denoted by |
- A. 2 - α
- B. 3 - α
- C. α
- D. 1 - α
|
| 2 |
If the observations are paired and the number of pairs is n, then the number of degree of freedom is equal to |
- A. n
- B. n - 1
- C. 2n
- D. 2n - 1
|
| 3 |
(1-α) is called: |
- A. Critical value
- B. Level of significance
- C. Level of confidence
- D. Interval estimate
|
| 4 |
The process of making estimates about the population parameter from a sample is called: |
- A. Statistical independence
- B. Statistical inference
- C. Statistical hypothesis
- D. Statistical decision
|
| 5 |
If (1-α) is increased, the with of a confidence interval is: |
- A. Decreased
- B. Increased
- C. Constant
- D. Same
|
| 6 |
|
- A. biased
- B. unbiased
- C. positively biased
- D. none of these
|
| 7 |
The following statistic are unbiased estimators: |
- A. The Sample mean
- B. S<sup>2</sup> = Σ(X - X)<sup>2</sup>/n-1
- C. The sample proportion
- D. All the above
|
| 8 |
The difference of upper and lower limits of confidence interval measures the |
- A. level of significance
- B. level of confidence
- C. interval
- D. precision
|
| 9 |
By increasing the sample size, the precision of confidence interval is: |
- A. Decreased
- B. Increased
- C. Constant
- D. Unchanged
|
| 10 |
Large sample contains more than |
- A. 5 values
- B. 10 values
- C. 20 values
- D. 30 values
|
