The Mean of Binomial distribution is 3 and variance is- Find 4 (i) the value of n (ii) p ( x 2 1 ) (iii) p (xS 7)

Q: The variance, 6², of a probability distribution is used to describe the spread of the values of the…

A: GivenMean(μ)=E(x)=8 x x-μ (x-μ)2 f(x) (x-μ)2f(x) 4     0.25   8     0.50   12     0.25…

Q: The random variables are x and y. The mean and standard deviation is: x is 12 and 5 y is 10 and 2 Of…

A: Given, X and Y are two random variables ,Where ,Mean of X , E(X) = 12 Standard  deviation of X ,…

Q: Suppose that a basketball player can make a free throw 70% of the time. Let X equal the minimum…

A: From the provided information,

Q: If X is normally distributed with a mean of 6 and a variance of 25, P(|X-6|<5) P(|X-6|<10)…

A: As per guideline expert have to answer first three subparts only dear student please upload other…

Q: Over the last 3-year period the fatal accident counts in County 1 (K’s and L’s) averaged 168/year…

A:

Q: Let X1,., X4 be a random sample chosen from the normal distribution with an unknown mean and…

A: Answer is explained below

Q: A random sample of 370 in size is taken from a population with a mean of 7850 and unknown variance.…

A: GIVEN DATA,  sample size =370population mean =7850population variance is unknown the sample variance…

Q: (a):The no. of industrial injuries per working week in a particular factory is known to follow a…

A: Given : The no. of industrial injuries per working week in a particular factory is known to follow a…

Q: The mean of a binomial distribution is 3 and variance is 3/2. Find the ility of (i) 0 success (ii) 2…

A: 5 Mean of binomial distribution is 3 Variance=3/2 That is, np=3np(1-p)=323(1-p)=321-p=12     p=12…

Q: 3- Assume that you have a random variable X which is binomially distributed, and someone told you…

A: Step 1: Given that x follows binomial distribution with mean 6 and variance =4.2 That is,…

Q: TRUE OR FALSE: The mean for the distribution of sample means is always equal to the mean for the…

A: We have to identify statement is true or false.

Q: Let X and Y be independent random variables distributed as N(-1, 1) and N(1, 1), respectively. .…

A: X follows a  normal distribution with , µ= -1 , σ= 1. Y follows a  normal distribution with , µ= 1 ,…

Q: What is the distribution of X? 1) Out of the 38 pizzas that you try, how many would you expect to…

A: Let p be the probability of you liking the pizza. Given that p = 0.08

Q: PIf Y is Normally distributed, and p(y200)=0.03 then the values of the mean and variance of Y,…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: Given f(x) = { (x2+1)/30; x = -2,-1,0,1,2  0; elsewhere ] Find the mean and variance of X.

A: X-2-1012f(x)

Q: Q1: Calculate the mean and the variance for Weibull Distribution when (i) a = 4,ẞ= 1 (ii) a = 1, ẞ =…

A: For weibull distribution the mean and variance are given as Mean(μ) =αβμ=αΓ(1+1β)Variance…

Q: Let Y be a random variable with mean zero and variance o². What do we know about the quantity 1 (Yi…

A: Given that,  Y = 1n∑i=1nYi  Now,  1n∑i=1nYi - Y = 1n∑i=1nYi - 1n×nY = Y - Y = 0

Q: Find a sufficient statistic (in the rigorous sense) for å when X - Pois(1)

A: Step1 An estimator is called sufficient it has has all the information about the population H(x) is…

Q: A. Given the sample 12, 14, 17, 18 and 21. Complete the table X Ex= B. Solve the following: 1. Range…

A: (a)   Obtain the values for the given table.   The values for the given table are obtained below as…

Q: Time spent by students studying daily is a uniformly distributed random variable with mean = 136…

A: Solution: 1. Let X be the time spent by students studying daily. From the given information, X…

Q: The sum of mean and variance of Binomial distribution is 3/4 and difference of mean and variance of…

A:

Q: The mean and variance of a binomial variate are 4 and 3 find P[X ≥ 1]. respectively,

A: Solution-: Given: Mean=E(X)=4      and Variance=Var(X)=4/3 We want to find P[X≥1]=?

Q: What is the formula for the variance? o S? =E (x - X)? / n o S? = E (X - x)? /n o S2 = E (x - X) / n…

A: Variance is one of the measures of dispersion.

Q: Suppose the relationship between Y and X is given by: Y = 30 - 25X + error  What is the expected…

A:

Q: Random variable X has cost function 3X + 600. The expected value of X is 20 and the variance of X is…

A: Given: Cost function = 3X + 600 E[X] = 20 V[X] = 4 Formula Used: E(aX+b) = aE[X] + b V(aX + b) = a2…

Q: Check whether the mean and the variance of the following distributions exist: a a. fx(x) = #(a²+x²)…

A: a. The provided distribution is:…

Q: Q1. By checking the correct or incorrect statements below into brackets, find the answer in (T)…

A: Here, we have given four statements and we need to find out the the given statements are true or…

Q: 30. The mean of Binomial distribution is 3 and the variance is MRI+ (i) the value of n (ii) p (x ≥…

A: Mean of binomial distribution is np=3 . Variance of binomial distribution is np1-p=94 .

Q: Let X be a randon variable following normal distribution with mean +1 and variance 4. Let Y be…

A: Introduction :

Q: Question 2: The range of the random variable X is [0, 1, 2, 3, x] where x is unknown. Each value is…

A:

Q: A freight company is shipping boxes that have an expected value of 2000 TL. The variance of the…

A: The expectation of a discrete random variable X, denoted by E(X), is defined as a measure of central…

Q: Let X represent the number that occurs when a 5-sided red die is tossed and Y the number that occurs…

A: a)The random variable X defines the number that occurs when a 5-sided red die is tossed.

Q: classes 10- 20- 30- 40- 50-60 frequency 4 Q11:For above distribution table find the variance and the…

A:

Q: Suppose the relationship between Y and X is given by: Y = 30 - 25X + error  What is the expected…

A:

Q: The mean is equal to of cellular phones of sold per day is therefore, it means that the average…

A: Given: x p(x) 15 0.3 18 0.2 19 0.2 20 0.15 22 0.15

Q: A financial analyst maintains that the risk, measured by the variance, of investing in emerging…

A: Population Var = ?² =280 Sample size = n = 20 Sample S.D = s² = 361

Q: Suppose f(x) = 0.50 for 0 < x < 2. Determine the mean and variance of X. Mean = i (Round the answer…

A: It is given that  f(x) = 0.50,    0 &lt; x &lt; 2

Q: The probability distribution of X, the number of imperfections for every 10 meters of a synthetic…

A: Solution-: Let, X-The number of imperfections for every 10 meters of a synthetic fabric  We have…