## Which of the following test must be two-sided ?

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# Statistical Inference Mcqs

## The Wilcoxon, Rank-Sum test used to compares_______________?

The Wilcoxon, Rank-Sum test used to compares_______________? A. Any number of populations B. A sample mean to the population meanC. Two populations D. Three populations

## Comparing the times to failure of radar transponders made by firms A, B, and C based on an airline’s…

Comparing the times to failure of radar transponders made by firms A, B, and C based on an airline’s sample experience with the three types of instruments one may use____________? A. Kolmogorov-Smirnor test B. Wilcoxon Rank-Sum…

## In testing for the difference between two populations, it is possible to use____________?

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 aboveD. Either of the above

## The Runs test results in rejecting the null hypothesis of randomness when______________?

The Runs test results in rejecting the null hypothesis of randomness when______________? A. There is an unusually large number of runs B. There is an unusually small number of runs C. None of theseD. Either of the above…

## The critical value of a test statistic is determined from_____________?

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 ExperimentC. The sampling…

## what is the probability of a type II error when α=0.05 ?

what is the probability of a type II error when α=0.05 ? A. 0.025 B. 0.95 C. 0.05D. Cannot be determined without more information

## condition for applying Central Limit Theorem (CLT) which approximate the sampling distribution of…

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…

## For t distribution, increasing the sample size, the affect will be on ?

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 FreedomD. All Above

## A quantity obtained by applying certain rule or formula is known as ________________?

A quantity obtained by applying certain rule or formula is known as ________________? A. Estimate B. Test Statistics C. Estimation D. Sample E. Estimator

## Analysis of Variance (ANOVA) is a test for equally of______________?

Analysis of Variance (ANOVA) is a test for equally of______________? A. Variances B. Proportions C. Only two parameters D. Means