TMA

TMA4/STT102 – Introductory Statistics

TMA Quiz Questions
TMA: TMA4/STT102
Matric Number:  SCORE=10.00
STT102 – Introductory Statistics
Mr. Olorunnishola Toyin (Tolorunishola@noun.edu.ng )
1 A die has four of its faces coloured white and the remaining two coloured black. What is the probability that when the die is thrown two consecutive times, the top face will be white in both cases ?

1313

4949

920920

1313
2 Three balls are drawn from a box containing 6 red marbles, 4 white marbles and 5 blue marbles. Find the probability that they are drawn in the order: red, white, and blue if each ball is drawn with replacement

22252225

12251225

42254225

82258225
3 When a die is thrown, what is the probability that the number is greater than 1, given that it is odd?

2323

3535

4545

1313
4 Giving that mean=34, median= 32 and standard deviation as 12. Calculate the Pearson’s coefficient of skewness
5 Calculate the standard deviation of the marks: 2,3,6,2,5,0,4,2.
6 Find the mode of 3,6,10,13, 14,17,19 and 22
7 Find the median of 3,6,10,13, 14,17,19 and 22
8 calculate the arithmetic mean of 3,6,10,13, 14,17,19 and 22
9 The mean of four numbers is 5 and the mean deviation is 3. Find the fourth number if the mean deviation of the first three numbers is 2.
10 From the set A={3,

2,23,9,72,23,9,7

},a number is selected at random. Find the probability that is a rational number.

2525

3535
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