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STA301 Statistics and Probability Online Quiz No 02 Solution and Discussion Fall 2015
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Question # 3 of 10 ( Start time: 01:45:35 PM ) Total Marks: 1
In how many ways a committee, consisting of 5 men and 6 women can be formed from 8 men and 10 women?
Select correct option:
450
780
5040
11760
Question # 4 of 10 ( Start time: 01:47:16 PM ) Total Marks: 1
Relative dispersion is expressed in terms of:
Select correct option:
Addition
Subtraction
Ratio
All of these
Question # 5 of 10 ( Start time: 01:49:04 PM ) Total Marks: 1
A fair coin is tossed three times. What is the probability that at least one head appears?
Select correct option:
1/8
7/8
4/8
6/8
Question # 6 of 10 ( Start time: 01:50:33 PM ) Total Marks: 1
The number of ways in which four books can be arranged on a shelf are:
Select correct option:
4
6
12
24
Question # 7 of 10 ( Start time: 01:52:08 PM ) Total Marks: 1
Which of the rule is applied to the frequency distribution that is mound-shaped and symmetric?
Select correct option:
Chebychev’s rule
Empirical rule
Combination rule
Combination rule
Question # 8 of 10 ( Start time: 01:53:29 PM ) Total Marks: 1
If a distribution has negative skewness, in what order (lowest to highest) will the averages be?
Select correct option:
mean, mode, median
mean, median, mode
mode, median, mean
median, mode, mean
Question # 9 of 10 ( Start time: 01:55:04 PM ) Total Marks: 1
If P(A or B) = P(A)+P(B), then A and B are:
Select correct option:
Mutually exclusive events
Independent events
Exhaustive events
Equally likely events
Question # 10 of 10 ( Start time: 01:55:55 PM ) Total Marks: 1
If in a simple linear regression model it is assumed that the intercept parameter is equal to 0:
Select correct option:
The regression line will pass through the origin
The regression line will pass through the point (0,10)
The regression line will pass through the point (0,-10)
The slope of the line will also be equal to 0
P(a)={},{10},{11},{10,11}
symmetrical distributions, b1 is equal to zero
semi-interquartile range
1/2
Chebychev’s Rule
normal distribution, b2 = 3
AuB={1,2,3,4,5,6}
horizontal axis
latest quiz solved on 16/12/2015
Select correct option:
970
50400
640
720
Select correct option:
Equally likely events
Mutually exclusive events
Both of these
None of these
Select correct option:
0.8
0.2
0.6
0.5
Select correct option:
Squared
Cube
Single
Same
Select correct option:
Standard Deviation
Variance
Mean Deviation
None of the above
Select correct option:
Empty Set
Power Set
Universal Set
Super Set
Select correct option:
Same units
Different units
Free of units
Independent of units
Select correct option:
Q2−Q1/Q1−Q2
Q3−Q1/Q3+Q1
Q3+Q1/Q3−Q1
Q3−Q1/Q2+Q1
Select correct option:
2/5
1/5
3/5
4/5
10. When the union of mutually exclusive events is equal to entire sample space, it is called:
Select correct option:
Exhaustive events
Mutually exclusive events
Equally likely events
Random events
11. 5C5 equals to:
Select correct option:
5
1
10
25
12. Quartile deviation is superior to range as it is not affected by extremely:
Select correct option:
Large values
Small values
Both Large and small values
None of these
13. If a box contains six red, three blue and five pink ties then probability of blue ties will be equal to:
Select correct option:
1/14
3/14
5/14
6/14
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