STA301 Final Term Quiz File

Sta301 Quiz 3 · ORANGE MONKEY · FINAL TERM MCQS ALL FILES MERGED

1. Simple random sampling is appropriate when the units in population are Homogenous……confirm

2. The standard error of the sampling distribution of p is equal to

…….confirm

3. The standard error of the sampling distribution of p1-p2 is equal to

……..confirm

Q4. Which of the following is the most common example of a situation for which the main parameter of interest is a population proportion?

Binomial experiment…..confirm

5. The central limit theorem states that the mean of the sampling distribution of the means is equal to the population Mean……confirm

6. The larger the standard error the _____ the confidence interval. Narrower….confirm

7. If Var(T1)>Vr(T2) where T1 and T2 are two unbiased estimators, then

T2 is more efficient…..confirm

8. A quantity obtained by applying certain rule or formula is known as Estimation…..confirm

9. For a non-symmetric (skewed) distributions median is ______ than/to mean Equal

10. Which one of the following is a meso-kurtic curve Normal….confirm

11. In a left skewed distribution

Xm-Q3 greater and equal to Q1-X0

12. When the mean deviation is calculated by taking deviations around median then co- efficient of mean deviation is obtained dividing mean deviation by All above
13. The mean of a distribution is 24 the mode is 25 and the standard deviation is 5 then the coefficient of skewness will be

Greater than zero

14. When a researcher want to compare intensity of symptoms when different doses are administered. In this case intensity of symptoms will be treated as Dependent variable…..confirm
15. For a symmetrical data set mean value is 150 and standard deviation 25.99.73% (approximately all) values will lie between (100,200)
16. In testing HO u = 100 against HI u=100 at the 10% level of significance HO is rejected if

The value of the test is static in the acceptance region

Q17. The sampling distribution of the mean becomes approximately normally distributed only when the following conditions is met?

Sample size is large

18. To determine a sample size in estimating population mean, we use the ______ value. T..….confirm
19. A_______ is a range of numbers inferred from the sample that has a certain probability of including the population parameter over the long run. Probability limit…….confirm