Class 12 MATHS Find the mean and variance of the random... Find the mean and variance of the random variable X which follows the following distribution. Solution in Telugu Video Solution free crash course Study
Step by step video, text & image solution for The mean and variance of a random variable X having a binomial distribution are 4 and 2 respectively. The P(X=1) is by Maths experts to help you in doubts & scoring excellent marks in Class 12 exams.Updated on:21/07/2023Class...
The author refers to his early stand by quoting, "Whatever be the detailed nature of his (i.e., an animal's) expectation, its potency will depend on its connections." After discussing various views on interpretation of expectation, the author suggests some observations and experiments to get ...
The random variable X has a normal distribution with mean μ and variance 12.8. A test,at the 5% significance level, of the null hypothesis μ= 5 against the alternative hypothesisμ 5 is carried out using a random sample of 20 observations of X.Give the rejection region of the test, in...
The random variable X has a normal distribution with mean μ (unknown) and variance o2(known). To test the null hypothesis Ho: =o, a random sample of n observations of X is taken,and the sample mean is x. Find, in terms of μo, o and n, the set of values of x which will re...
Degrees of freedom We will prove below that a random variable has a Chi-square distribution if it can be written as where , ..., are mutually independentstandard normal random variables. The number of variables is the only parameter of the distribution, called the degrees of freedom parameter...
This calculator will tell you the variance for an F-distribution random variable, given the numerator and denominator degrees of freedom.Please enter the necessary parameter values, and then click 'Calculate'.Degrees of freedom 1: Degrees of freedom 2: Related...
construct a new random variable equal to the deviation of from its expected value; take the square which is a measure of distance of from its expected value (the further is from , the larger ); finally, compute the expectation of
For a binomial random variable B(n=12, p=0.5), find out the mean and variance. Mean Variance ()①A. 6 3 ②B. 7 3.5 ③C. 8 4 A. ① B. ② C. ③ 相关知识点: 试题来源: 解析 A A binomial random variable has an expected value or mean equal to np and variance equal to...
Let X be a random variable with a mean μ and a variance o2.Let {Xn)n=1 be a sequence of independent and identically dis-tributed random variables. If the common mean and variance of the X,'s are μ and o2, respectively, then show that P(|(X_n)-μ|≥r)≤(σ^2)/(nr^2) ...