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STA301 Statistics and Probability Online Quiz No 02 Solution and Discussion Fall 2015

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Please all students related this subject Share your online Quizzes here to help each other.thanks

 

Please share the question and their answers of this quiz if anyone has done.
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STA301 QUIZZES NO 2 14 DEC 2015

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

  • If A = {10, 11} then which of the following is power set of A

P(a)={},{10},{11},{10,11}

  • For a symmetrical distribution, b1 is always

symmetrical distributions, b1 is equal to zero

  • Dividing interquartile range by 2 we get

semi-interquartile range

  • If a fair coin is tossed 2 times then probability that two heads appear is equal to

1/2

  • Which of the rule is applied to the frequency distribution that is mound-shaped and symmetric

Chebychev’s Rule

  • For a Normal distribution, b2 (moment ratio) will be

normal distribution, b2 = 3

  • If A = {1,2,3,4 } and B = {3,4,5,6} then A union B will be

AuB={1,2,3,4,5,6}

  • In a box and whisker plot, variable of interest is plotted on

horizontal axis

  • If A = {H, T} then which of the following is power set of A
  • A graph of plotted points which shows the relationship between two sets of data is known as
  • Mean deviation is a measure of dispersion in which deviations are taken around the
  • 5  C 5 equals to
  • Moment ratio b1 is used to measure
  • Which of the following is NOT a possible probability
  • If a distribution has negative skewness, in what order (lowest to highest) will the averages be
  • In a five number summary, which of the following is not used for data summarization

 latest quiz solved on 16/12/2015

  1. In how many different ways can the letters of the word 'CORPORATION' be arranged so that the vowels always come together?

Select correct option:

          970

          50400

          640

          720

 

  1. In a coin tossing example, we have only two possible outcomes, a head or a tail; this is an example of :

Select correct option:

          Equally likely events

          Mutually exclusive events

          Both of these

          None of these

 

  1. For two mutually exclusive events A and B, P (A) = 0.2 and P (B) = 0.4, then P(AUB) is:

Select correct option:

          0.8

          0.2

          0.6

          0.5

 

  1. Variance is expressed in ...... units as the units of data set.

Select correct option:

          Squared

          Cube

          Single

          Same

 

  1. Adding all the squared deviations taken from mean and dividing by the number of observations, we get:

Select correct option:

          Standard Deviation

          Variance

          Mean Deviation

          None of the above

 

  1. A set which is the sub-set of every set is

Select correct option:

          Empty Set

          Power Set

          Universal Set

          Super Set

 

  1. Absolute dispersion measures spread in terms of:

Select correct option:

          Same units

          Different units

          Free of units

          Independent of units

  1. Formula for Co - efficient of Quartile Deviation is:

Select correct option:

         

Q2−Q1/Q1−Q2

         

Q3−Q1/Q3+Q1

         

Q3+Q1/Q3−Q1

         

Q3−Q1/Q2+Q1

  1. If a box contains two red and three yellow balloons then probability of yellow balloons will be equal to:

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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