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STA301 Quiz No.2 Shared by Mohsin

Question # 1 of 10 ( Start time: 07:45:27 PM )          Total Marks: 1
Suppose 60% of a herd of cattle is infected with a particular disease. Let Y = the number of non-diseased cattle in a sample of size 5. the distribution of Y is:
Select correct option:
Binomial with n = 5 and p = 0.6
Binomial with n = 5 and p = 0.4
Binomial with n = 5 and p = 0.5
Poisson with u = .6

Question # 2 of 10 ( Start time: 07:45:46 PM )          Total Marks: 1
If b(x; 15, 0.75), the mean of this distribution is:
Select correct option:
11.50
11.15
11.20
11.25

Question # 3 of 10 ( Start time: 07:46:40 PM )          Total Marks: 1
A statistic whose standard deviation decreases with an increase in sample size will be called:
Select correct option:
Unbiased
Consistent
Efficient
Sufficient

Question # 4 of 10 ( Start time: 07:48:04 PM )          Total Marks: 1
F- Distribution has………parameter(s).
Select correct option:
One
Two
Three
No

Question # 5 of 10 ( Start time: 07:49:33 PM )          Total Marks: 1
In an ANOVA test there are 8 observations in each of 3 treatments. The degree of freedom for error in CR design is:
Select correct option:
21
24
14
16

Question # 6 of 10 ( Start time: 07:50:44 PM )          Total Marks: 1
What is the mean and variance of binomial distribution b(x; n, p)?
Select correct option:
Xp and npq
NP and PQ
NP and npq
Zero and one

Question # 7 of 10 ( Start time: 07:52:08 PM )          Total Marks: 1
“A point estimate plus/minus a few times the standard error of that estimate”. This statement represents:
Select correct option:
Confidence interval
Critical region
Acceptance region
Critical value

Question # 8 of 10 ( Start time: 07:53:20 PM )          Total Marks: 1
Mean of F-distribution with V2>2 is
Select correct option:
V1/(V2-2)
V2/(V2-2)
V2/(V1-2)
V1/(V1-2)

Question # 9 of 10 (Start time: 07:54:50 PM)         
Which of the following is most important and most widely used method in point estimation?
Select correct option:
The method of moments
The method of fractional moments
The method of least square
The method of maximum likelihood

Question # 10 of 10 (Start time: 07:56:21 PM)
The hypergeometric random variable is a (an):
Select correct option:
Continuous variable
Discrete variable
Undefined
Independent




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