Let x be a random variable with the following probability distribution 2 4 P(x) 0.3 0.2 0.3 k 0.1 Find the expected value and the standard deviation for x. Select one: O a. 2.7 and 2.1

Q: Consider selecting a household at random in the rural area of a country. Define the random variable…

A: Given: xP(x)10.1420.17830.2240.2650.15260.02170.01980.00590.004100.001Total1

Q: A small inn has 4 rooms.  Let X represent the number of rooms that are rented out on any given…

A: Given information- We have given the probability distribution for X.

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) -1 0.35…

A: Given data,   a)Expectation E(X)=? b)Variance V(X)=?

Q: Let x = -1, 0,1, 10 be a random variable with a uniform probability distribution. Calculate the…

A: From the given information we want to find the mean , variance and standard deviation for the…

Q: A sociologist randomly selects single adults for different groups of three, and the random variable…

A:

Q: Consider the discrete random variable x given in the table below. Calculate the mean, variance, and…

A:

Q: Suppose that T is a random variable with the following probability distribution: T: 3 4 p(t): 0.08…

A:

Q: Find the expected value μY and standard deviation σY given the following probability distribution…

A:

Q: A discrete random variable X is defined by the following probability distribution. Calculate the…

A: Given : X is probability distribution To find : Standard deviation

Q: Let X be a random variable with the following probability distribution: X -4 3 5 f(x) 0.3 0.2 0.5…

A: Given,E(X)=∑X.f(X)

Q: Exercise 4. A discrete random variable X has the following probability distribution: 13 18 20 24 27…

A: The given data is  xi 13 18 20 24 27 p(xi) 0.22 0.25 0.20 0.17 0.16 The formula for the mean…

Q: (e) P(1.62 ≤ x ≤ a) = 0.24 a = 2.34

A:

Q: Round all of your final answers to four decimal places if necessary. The probability distribution of…

A:

Q: The probability distribution of a random variable X is given in the table below: -4 -2 4 .1 P(X = =)…

A: The probability at different values of x is given in the table of problem. The mean or expected…

Q: Calculate the mean, variance, and standard deviation of x.

A: Given,the discrete random variable x,and the probability distribution table is…

Q: The discrete random variable X has the following probability distribution: -10 0 10 p(x) 0.20 0.40…

A:

Q: c)      Determine the standard deviation σ of x

A: x p(X) xp(x) (x-xbar)^2 p(x)*(x-xbar)^2 0 0.8 0 0.0625 0.05 1 0.15 0.15 0.5625 0.084375 2 0.05…

Q: O The random variable X has a binomial distribution B(11, p). If P(X = 8) = P(X = 7) find the value…

A: Note: If the post contains multiple questions only allow to first question as per guidelines of…

Q: Let X be a random variable that has a Poisson distribution. If the probability that X is greater…

A: Random variable X follows poisson distributionP(X>0)=0.9986

Q: The probability distribution of a random variable X is given in the table below: -4 -2 2 4 .1 .2 .3…

A: Mean=E(X)=-4(0.1)+(-2)(0.2)+0(0.3)+2(0.1)+4(0.3)=0.6

Q: Let X be a random variable with the following probability distribution: - 4 3 5 f(x) 0.6 0.3 0.1…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.