The sum of mean and variance of Binomial distribution is 3/4 and difference of mean and variance of Binomial distribution is 8/8 Find the value of n if P(X=4)=560/2187

Q: Use the formula to find the standard error of the distribution of differences in sample means,…

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Q: For the normal distribution shown below, what area is contained between -2 and 1? -3 -2 -1 3 T2

A: Normal distribution is the most common continuous probability distribution. In a normal distribution…

Q: he mean and standard deviation of binomial distribution are 3 and √2 respectively, find the…

A: Given  mean=3 np=3..(1) standard deviation=√2 variance=2 np(1-p)=2 3(1-p)=2 From the equation (1)…

Q: For a Binomial Distribution if n =6 and 9 P(X=4) =P(X=2) find i) Variance

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Q: Use the formula to find the standard error of the distribution of differences in sample means,…

A: The answer is attached below,

Q: The mean of Binomial distribution is 3 and variance is-. Find P(1 s x < 6)

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Q: Compute the standard score (Z-score) for x, when x = 40, the mean of the distribution = 50, and the…

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Q: ez-score for x = 61 is . So 61 is standard deviations (Choose one) ▼ the mean μ = 56. X

A: It is given thatMean, μ = 56Standard deviation, σ = 20Z-Score, Z = ( X - μ )/σwhere, Z be the…

Q: A random sample of 530 in size is taken from a population with a mean of 1830 and unknown variance.…

A: From given : Mean of the population = 1830 Sample variance = 510 Sample size = 530

Q: A normal distribution has a mean of 40 with a standard deviation of eight if one scores randomly…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: What is the mean of the geometric distribution given by

A: It is given that, X is a geometric variate with its pmf, P(x)=3-x = P(x)=(1/3)x ; x=0,1,2,.... We…

Q: The time that it takes for the next train to come follows a Uniform distribution with…

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Q: Q4/ The average on a statistics test was 78 with a standard deviation of 8. If the test scores are…

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Q: the mean only given the standard deviation? I know I can get the variance from standard deviation.…

A: The formula for calculating the  variance and standard deviation is,

Q: X is the Binomial Random Variable which counts the number of students who passed an exam. If the…

A: Given n=81 P=0.85

Q: Calculate the coefficient of variation of a distribution with n-10, Σχ*h= 110 and Σ2.-2 35. Answers:…

A: The formula for coefficient of variation is given by: CV=σμ×100 Here μ=∑x·f=110 and ∑x2·f=1235 and…

Q: Find the mean and standard deviation for the binomial distribution when p = 3/8 and n= 235.

A: Given p=3/8, n=235

Q: Our random variable X has a beta distribution with a = 7 and B = 3. %3D What is the variance of the…

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Q: for the above i got the mean of 1, can you help me w the standard deviation and the variance

A: From the above parts Here we have Since, X ~ Binomial (n = 3 , p = 1/3)  Therefore, n = 3 , p = 1/3…

Q: If X is exponentially distributed with a mean of 3, can you find a uniform distribution U[a,b] with…

A: The provided information is as follows:The  is exponentially distributed with the mean 3..The mean…

Q: The odds difference = exp((0.15*20)-(0.15*30)), the standard error(se) = 0.06 which is on the scale…

A: From the given information, Consider, odds difference = exp((0.15*20)-(0.15*30)) and  standard…

Q: X is a normal variable with mean of 8 and variance of 97. What is the z-score when x = 3?

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Q: The scores on a test are normally distributed with a mean of 150 and a standard deviation of 30.…

A: The normal distribution:A continuous random variable X is said to follow normal distribution if the…

Q: Find the standard error of the sample mean such that we have 60 random samples with mean 25 and…

A: Sample size(n)=60mean=25standard deviation(s)=13

Q: There are two samples of children taken from a population. In the first sample, mean of age of 20…

A: Combined mean : To integrate two or more things into a single entity is to link them together.When…

Q: variance, standard deviation and coefficient of variation.

A: Here use formula of standard deviation and mean

Q: A binomial distribution happens such that q=4C2/100 and n=6C1.Find the square root of std deviation.

A: The objective of this question is to find the square root of the standard deviation of a binomial…

Q: The mean of Binomial distribution is 3 and variance is. Find P(1 < x < 6)

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Q: a standardize exam scores are normally distributed,in a recent year,the mean test scores was…

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