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प्रश्न
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On a multiple-choice exam with 3 possible destructive for each of the 5 questions, the probability that a student will get 4 or more correct answers just by guessing is
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संबंधित प्रश्न
For the random variable X with the given probability mass function as below, find the mean and variance.
For the random variable X with the given probability mass function as below, find the mean and variance.
For the random variable X with the given probability mass function as below, find the mean and variance.
A commuter train arrives punctually at a station every half hour. Each morning, a student leaves his house to the train station. Let X denote the amount of time, in minutes, that the student waits for the train from the time he reaches the train station. It is known that the pdf of X is
Obtain and interpret the expected value of the random variable X
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A random variable X has binomial distribution with n = 25 and p = 0.8 then standard deviation of X is
Find the expected value for the random variable of an unbiased die
Let X be a continuous random variable with probability density function
f(x) =
Find the mean and variance of X
In investment, a man can make a profit of ₹ 5,000 with a probability of 0.62 or a loss of ₹ 8,000 with a probability of 0.38. Find the expected gain
What are the properties of Mathematical expectation?
What do you understand by Mathematical expectation?
How do you defi ne variance in terms of Mathematical expectation?
A person tosses a coin and is to receive ₹ 4 for a head and is to pay ₹ 2 for a tail. Find the expectation and variance of his gains
Let X be a random variable and Y = 2X + 1. What is the variance of Y if variance of X is 5?
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Probability which explains x is equal to or less than a particular value is classified as
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Given E(X) = 5 and E(Y) = – 2, then E(X – Y) is
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E[X – E(X)] is equal to
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The distribution function F(x) is equal to
Prove that if E(X) = 0, then V(X) = E(X2)
