The random variable X has a binomial distribution with n= 20 and p = 0.01. What is the meam and Variance of X? 0.2 and 0.198 2 and 198 0.1 and 0.099 None

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: Q6- Assume the probability that a maple tree at age 5 grows less than 130

A: Let X be the random variable such that the height of maple trees at age of 5. As given  X~ N(μ,σ)…

Q: The random variable X is exponentially distributed, where X represents the waiting time to see a…

A: The random variable X, which reflects the time it takes to see a shooting star during a meteor…

Q: X is a binomially distributed random variable with n= 10 and p= 0.25 Find the mean and variance…

A: Answer: From the given data, X follows binomial distribution, sample size (n) = 10 P = 0.25  and q =…

Q: X is random variable with a normal distribution having a mean of 3 and variance of 2. Find P ( X> 4)…

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: Use the Normal approximation to find the probability that the sample proportion of heads is (a)…

A:

Q: Let x be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A: Given, Let X= 4.9, 4.2, 4.5, 4.1, 4.4, 4.3

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

A:

Q: Q5: Let X be a random variable following a normal distribution with mean 14 and variance 4.…

A: Given, Mean μ = 14Variance σ2 = 4Standard deviation σ = 2 P(X-2 > c) = 0.95

Q: A random variable X has a binomial distribution with = 0.34 and a sample size of n. Find the mean…

A:

Q: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

Q: The scores on a placement test given to college freshmen for the past 5 years are approximately…

A: The scores on the placement test follows a normal distribution with mean 76 and variance 6.

Q: Suppose that the random variable X measures the number of hot dogs purchased in a food court in an…

A: CorX,Y=0.75VX=VY=36W=2X+3Y

Q: random sample of size 50 is taken from a geometric distribution with a parameter 0.45. Find the…

A: We know that The pmf of Geometric distribution is P(X=x) = qxp ; x= 0,1,2,. . .

Q: 3. E = total amount of time spent in studying every day S = { }

A: To find the possible values of a random variable. E = total amount of time spent in studying every…

Q: A normally distributed random variable X with variance = 400 and P(X > 120) = 0.7632. Then the mean…

A: Let X be the normally distributed random variable with variance σ2=400 X~N(μ, σ2=400)

Q: Let x be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A: Answer Given The population mean= 4.78This is left-tailed test.

Q: A random sample of 10 subjects have weights with a standard deviation of 12.2153 kg. What is the…

A:

Q: the actual dose administered is normally distributed with mean μ mg and variance σ 2 = 2.6 mg2.

A: It is given that the actual dose administered is normally distributed with mean μ mg and variance σ…

Q: The random variable X is exponentially distributed, where X represents the waiting time to see a…

A: Denote X as the waiting time during a meteor shower, to observe a shooting star. It is given that X…

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: The sum of the squared deviation scores is SS = 20 for a sample of n = 6 scores. What is the…

A: The variance of the sample can be calculated as:

Q: A normally distributed random variable X with variance o=400 and P(X > 130) = 0.6554. Then the mean…

A: Let X be a continuous random variable and is normally​ distributed with a mean of μ and a standard…

Q: Derive the mean variance of Be(p) using the exponential family of densities.

A: The Bernoulli distribution with parameter p, denoted as Be(p), can be expressed in the exponential…

Q: Please explain this well. Where does the 16 come from? Where does (1/8) come from? Please explain…

A: We will need substitution  Substitute this in the integral

Q: Let X-G(6,0.3) Find the variance of the gamma distribution.

A:

Q: Answer must be a fraction in lowest term. * The probability distribution of the discrete random…

A:

Q: Let x be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A: (i)   Use TI-83 plus Calculator to obtain the values of sample mean and the standard deviation.…

Q: i n =49 and p=0.6 then the variance of the binomial distribution is а. у 29.40 O b. 0.90 О с. 58.80…

A: We have to find variance..

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

A: Introduction :

Q: Let X be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A:

Q: The lifetime X of a certain electronic component in hours is an exponential random variable with a…

A: It is given that, The lifetime X of a certain electronic component in hours is an exponential random…

Q: X is a discrete random variable such that the possible values are {a, a+1, a+2, ... b-1, b}. The…

A:

Q: A random variable X has only two values a and b with P(X = a) = p , P(X = b) = q (p + q = 1). Find…

A:

Q: If X is random variable with parameter mean = 3 variance 9 find 7... = Find P( x> 0) %3D

A: Given that X is a random variable with mean = 3 and variance = 9, then Z= (X - mean)/SD = (X - 3)/3…