Which option will be suitable from this stats exercise.

If n1 = 16, n2 = 9 and = 0.01; t/2 equals:

1. 2.787
2. 2.807
3. 3.767
4. 2.797

If = 0.10 and n = 15; t/2 equals:

1. 2.145
2. 1.771
3. 1.761
4. 1.753

The distance between an estimate and the estimated parameter is called:

1. Bias
2. Error of estimation
3. Standard error
4. Sampling error

(1 - ) is called:

1. Level of confidence
2. Critical value
3. Level of significance
4. Interval estimate

If the population standard deviation is known, the confidence interval for the population mean is based on:

1. The X2 -distribution
2. The Poisson distribution
3. The normal distribution
4. The t-distribution

The point estimator of population mean is:

1. Sample mean
2. Sample standard deviation
3. Sample size
4. Sample variance

Statistical inference has two branches namely:

1. Point estimator and unbiased estimator
2. Estimation of parameter and testing of hypothesis
3. Level of confidence and degrees of freedom
4. Biased estimator and unbiased estimator

If 1 - = 0.90, then value of Z/2 is:

1. 2.575
2. 2.326
3. 1.645
4. 1.96

If the observations are paired and the number of pairs is n, then degree of freedom is equal to:

1. n1 + n2 - 2
2. n/2
3. n - 1
4. n

In a hypothesis test, what does the p value signify?

1. smallest level of significance for acceptance of Null Hypothesis
2. smallest level of significance for acceptance of Null Hypothesis
3. smallest level of significance for rejection of Null Hypothesis
4. largest level of significance for rejection of Null Hypothesis