In a confidence interval, the range of values above and below the sample statistic is called :

With reference to sampling, which of the following are correct?

(A) Simple random sampling is probability sampling

(B) Snow-ball sampling is non-probability sampling

(C) Stratified sampling is probability sampling

(D) Cluster sampling is non-probability sampling

Choose the correct answer from the options given below:

The simple random sample consists of six observations: 5, 8, 10, 7, 10, 14. The point estimate of the population mean is:

As per the concept of inferential statistics, population stands for:-

If the average rainfall in a given area is 8 inches and the following table represents the average rainfall for four consecutive years, then the value of test statistic 't' is_____.

In reference to the Inferential Statistics, which of the following is NOT correct?

When the two independent small samples of sizes $n_1$ and $n_2$ with means $\bar{x}_1$ and $\bar{x}_2$ respectively are drawn from populations with identical population variances, the test-statistic is computed as