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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.
Thanks. 

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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