**361. For t distribution, increasing the sample size, the affect will be on ?**

A. Standard Error of the Means

B. The t-ratio

C. Degrees of Freedom**D. All Above**

**362. condition for applying Central Limit Theorem (CLT) which approximate the sampling distribution of the mean with a normal distribution is?**

**A. n > 30**

B. N(1 – p) > 5

C. 2 n 5

E. N < 30

**363. what is the probability of a type II error when α=0.05 ?**

A. 0.025

B. 0.95

C. 0.05**D. Cannot be determined without more information**

**364. The critical value of a test statistic is determined from_____________?**

A. The sampling distribution of the statistics assuming Null Hypothesis

B. calculations based on many actual repetitions of the same Experiment**C. The sampling distribution of the statistic assuming Alternative Hypothesis.**

D. Non of these

**365. In testing for the difference between two populations, it is possible to use____________?**

A. The Wilcoxon Rank-Sum test

B. The Sign test

C. None of the above**D. Either of the above**

**366. 1 – α is the probability of_____________?**

**A. Acceptance Region**

B. Type-I error

C. Type-II Error

D. Rejection Region

**367. Parameter is a _________ quantity?**

**A. Constant**

B. Variable

C. All of above

D. Non of these

**368. If we reject the null hypothesis, we might be making____________?**

A. Unpredictable

B. A correct Decision**C. Type-II Error**

D. Type-Error

**369. Analysis of Variance (ANOVA) is a test for equally of______________?**

**A. Variances**

B. Proportions

C. Only two parameters

D. Means

**370. A quantity obtained by applying certain rule or formula is known as ________________?**

**A. Estimate**

B. Test Statistics

C. Estimation

D. Sample

E. Estimator