10 mcqs in statistics …

  

11. What is the probability of rolling first an odd number, then an even number with one fair die? (Points : 1)
1/2
1/3
1/4
1/6
 

12. The hypothetical result of an infinite sample from a given population and calculating of some statistic from those infinite samples is a: (Points : 1)
Sampling distribution
Sampling error
Standard error
Standard sample
 

13. If a researcher accepts a null hypothesis when that hypothesis is actually false, he has committed: (Points : 1)
a type I error
a type II error
a type III error
no error
 

14. If a researcher rejects a null hypothesis when that hypothesis is actually true, he has committed: (Points : 1)
a type I error
a type II error
a type III error
no error
 

15. Level of significance is symbolized by: (Points : 1)
ß
µ
α
s
 

16. The area of a sampling distribution beyond which the null hypothesis is rejected is known as the: (Points : 1)
Sampling region
Directional hypothesis
Critical region
Degrees of freedom
 

17. In medical statistics, we generally set the level of significance at: (Points : 1)
0.01
0.05
0.10
0.50
 

18. A study in which a set of patients are tested for pain level before and after being given a new pain medication would use which test? (Points : 1)
ANOVA
Independent t-test
Dependent t-test
Regression
 

19. Power is equal to: (Points : 1)
 

ß
1-
1-ß
1 – α 

20. Nurse researchers hypothesized that the use of therapeutic touch would reduce anxiety levels in pre-op hip replacement patients. The null hypothesis would be: (Points : 1)
Therapeutic touch reduces anxiety levels in pre-op hip replacement patients.
Therapeutic touch does not reduce anxiety levels in pre-op hip replacement patients.
Therapeutic touch reduces 25% of anxiety levels in pre-op hip replacement patients.
Some other therapy reduces anxiety levels in pre-op hip replacement patients.

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