Question 1 : <p>In how many ways a team of 5 can be made out of 7 Boys and 8 Girls,</p><p>if 2 Girls are compulsory to form a Team</p>
Question 2 : <p>If sum of squares of the values = 3390 , N = 30 and standard deviation = 7 , find out the mean . </p>
Question 4 : <p>The point of intersection of the "less than " and "more than" gives correspond to</p>
Question 5 : <p>For moderately skewed distribution of marks in commerce for a group of 200 students the mean marks and mode marks were found to be 55.60 and 46 .what is the median marks?</p>
Question 6 : <p>For two events A, B let P(A) = {tex}{2 \over 3}{/tex} P(B) = {tex}{3 \over 8}{/tex} and P (A n B) = {tex}{1 \over 4}{/tex} then A and B are:</p>
Question 7 : <p>Frequency density corresponding to a class interval is the ratio of ; </p>
Question 9 : <p>If variance of x is 5, then find the variance of ( 2-3x ) </p>
Question 11 : <p>Geometric Mean of three observation 40,50 and X is 10 . The value of X is </p>
Question 12 : <p>The probability of selecting a sample of size ‘n’ out of a population of size N by simple random sampling with replacement is:</p>
Question 14 : <p>If variance of x is 5, then find the variance of ( 2-3x ) </p>
Question 16 : <p><i>A</i> bag contains 5 Red balls, 4 Blue Balls and'm' Green Balls. If the random probability of picking two green balls is 1/7. What is the no. of green Balls (m)</p>
Question 17 : <p>When all observation occur with equal frequency <u> </u> does not exist . </p>
Question 18 : <p>If the variables x and z are so related that z = ax + b for each x = x<sub>1 , </sub>where a and b are constant , then {tex}\overline{z}{/tex} = a{tex}\overline{x}{/tex} + b</p>
Question 19 : <p>Let the distribution function of a random variable X be F(X) = P(X <. X). Then F(5) - F(2) is:</p>
Question 20 : <p>A team of 5 is to be selected from 8 boys and three girls. Find the probability that it includes two particular girls</p>
Question 21 : <p>Out of 1000 persons, 25 per cent were industrial workers and the rest were agricultural workers. 300 persons enjoyed world cup matches on T.V. 30 per cent of the people who had not watched world cup matches were industrial workers. What is the number of agricultural workers who had enjoyed world cup matches on TV?</p>
Question 22 : <p>What is the probability of having at least one’ six’ year 3 throws of a project die?</p>
Question 23 : <p>In order to compare two or more related series, we consider:</p>
Question 24 : <p>One card is drawn fron pack of 52 ,What is the probability that it is a king or a queen?</p>
Question 26 : <p>The odds that a book will be favourably received by 3 independent reviewers are 5 to 2, 4 to 3 and 3 to 4 respectively. What is the probability that out of 3 reviewers a majority will be favourable?</p>
Question 27 : <p>In class of 11 students , 3 students were failed in a test . 8 students who passed secured 10,11,20,15,12,14,-26 and 24 marks respectively . What will be the median marks of the students : </p>
Question 29 : <p>A coin is tossed 5 times, what is the probability that exactly 3 heads will occur</p>
Question 30 : <p>Mean for the data 6,4,1,6,5,10,3 and 5 when each observation added by 2 , what is mean of the data </p>
Question 33 : <p>A bag contains 6 red balls and some blue balls. If the probability of . drawing a blue ball form the bag is twice that of a red ball, find the number of blue bails in the bag</p>
Question 36 : <p>if the mean value of seven numbers 7,9,12,X,4,11 and 5 is 9 , then the missing number X will be :</p>
Question 37 : <p>If Mean = 5, standard deviation = 2.6 , Median = 5 and quartile deviation = 1.5 , then the coefficient of quartile deviation equals </p>
Question 38 : <p>A box contains 2 red, 3 green and 2 blue balls. Two balls are drawn a random. What is the probability that none of the balls drawn is blue?</p>
Question 39 : <p>Four married couples have gathered in a room. Two persons are selected at random amongst them, find the probability that selected persons are a gentleman and a lady but not a couple</p>
Question 41 : <p>Frequency density corresponding to class interval is the ratio of: </p>
Question 42 : <p>The most common form of diagrammatic representation of a grouped frequency distribution is:</p>
Question 43 : <p>Find the Number of observations between 150 and 200 based on the following data -</p><p> Value: More More More More</p><p> than 100 than 150 than 200 than 250</p><p>No. of observations: 76 63 28 05</p>
Question 47 : <p>Histogram is used for the presentation of the following type of series</p>
Question 48 : <p>The ordering of a particular design of a cloth show room , a <u> </u> size be more approtiate .</p>
Question 50 : <p>Find the probability of drawing a spade on each of two consecutive draws from a well shuffled pack of cards, without replacement</p><p> </p>
