AP ICET 17th September 2021 Shift-2
For the following questions answer them individually
The arithmetic mean of 10 numbers is 20. If each number of this set is first multiplied by 2 and then increased by 5, then the arithmetic mean of the new numbers is
If the mode and mean of the data are 12 and 15, respectively then the sum of the mean, median and mode of that data is
If the standard deviation of the numbers 2 , 4 , 5 and 6 is 'K', then the standard deviation of the number 4 , 6 , 7 and 8 is
8 students participated in a singing competition and are ranked by two judges 'A' and 'B' as follows:
then the rank correlation coefficient of this data is
If a number is selected at random from the first 25 natural numbers, then the probability that it is either a multiple of 5 or a multiple of 7 is
A box contains 40 white balls and some red and some green balls. If the probability of drawing a red ball at random from it is equal to thrice that of a white ball and the probability of drawing a green ball at random from it is equal to twice that of a red ball, then the total number of balls in that box is
If two persons are selected at random from 12 persons sitting around a table, then the probability that the selected person are not seated adjacent to each other is
If three fair dice are rolled, then the probability that a prime number doesn't appear on any one of their faces is
