Statistics and Probability (KVPY Stream SBSX (Class 12 & 1st Year BSC) Math): Questions 1  3 of 8
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Question number: 1
» Statistics and Probability » Probability of an Event
Appeared in Year: 2012
Question
Let denote the sum of the first n positive integers. The numbers S_{1}, S_{2}, S_{3}, …, S_{99} are written on 99 cards. The probability of drawing a card with an even number written on it is –
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Question number: 2
» Statistics and Probability » Probability of an Event
Appeared in Year: 2012
Question
A purse contains 4 copper coins and 3 silver coins. A second purse contains 6 copper coins and 4 silver coins. A purse is chosen randomly and a coin is taken out of it. What is the probability that is a copper coin –
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Question number: 3
» Statistics and Probability » Standard Deviation
Appeared in Year: 2014
Question
Let . A list of number has mean and standard deviation . A new list of numbers is made as follows: and for . The mean and the standard deviation of the list are and . Then which of the following is necessarily true?
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