TMA4/STT102

My TMA Home TMA Results My Pending TMA Quick Help 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 ? 13$$\frac{1}{3}$$ 49$$\frac{4}{9}$$ 920$$\frac{9}{20}$$ 13$$\frac{1}{3}$$ 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 2225$$\frac{2}{225}$$ 1225$$\frac{1}{225}$$ 4225$$\frac{4}{225}$$ 8225$$\frac{8}{225}$$ 3 When a die is thrown, what is the probability that the number is greater than 1, given that it is odd? 23$$\frac{2}{3}$$ 35$$\frac{3}{5}$$ 45$$\frac{4}{5}$$ 13$$\frac{1}{3}$$ 4 Giving that mean=34, median= 32 and standard deviation as 12. Calculate the Pearson's coefficient of skewness 0.5 0.4 0.3 1.6 5 Calculate the standard deviation of the marks: 2,3,6,2,5,0,4,2. 1.5 1.7 1.8 1.9 6 Find the mode of 3,6,10,13, 14,17,19 and 22 20 17 20 13 7 Find the median of 3,6,10,13, 14,17,19 and 22 13 20 17 13.5 8 calculate the arithmetic mean of 3,6,10,13, 14,17,19 and 22 20 15 13 17 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. 12 20 11 15 10 From the set A={3, 2√,23√,9√,7√$$\sqrt{2},2\sqrt{3},\sqrt{9},\sqrt{7}$$ },a number is selected at random. Find the probability that is a rational number. 25$$\frac{2}{5}$$ 35$$\frac{3}{5}$$ 3 4