Let X be a random variable with the following probability distribution. Value  x  of  X P (X=x) 10 0.40 20 0.45 30 0.10 40 0.05 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation  E (X)  of X.   E (X) =   (b) Find the variance Var X of X.   Var (X)=

Q: A "big-box" store sells a particular laptop, but has only four in stock. The manager wonders what…

A:

Q: A random variable X has the following probability distribution. Values of X -1 1 Probability 0.22…

A: We have given that Values of x -1 0 1 ProbabilityP(x) 0.22 0.56 0.22

Q: f(x, y) y 1 3 1 0.05 0.05 0.00 2 0.05 0.10 03 3 0.10 0.35 0.10

A: The table is as follows       x     f(x,y)   1 2 3 h(y)   1 0.05 0.05 0.1 0.2 y 3 0.05 0.1…

Q: x P(x) 0 0.15 1 0.3 2 0.05 3 0.5

A: Here we have given the value of x that the random variable X takes and their corresponding…

Q: P(x) O 0.033 Five males with an X-linked genetic disorder have one child each. The random variable x…

A: Given data is

Q: P(x) 0.05 0.1 2 0.3 3 0.55 Find the standard deviation of this probability distribution. Give your…

A: Given: x P(x) 0 0.05 1 0.1 2 0.3 3 0.55

Q: x P(x) 0 0.25 1 0.15 2 0.3 3 0.3 Find the standard deviation of this probability distribution.…

A:

Q: For the cumulative distribution function, find a. U b. P(x> 2) c. F(x= 6) d. P(x = 6) e. f(x = 4) f.…

A: The cumulative distribution function:

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

A: Here it is valid Probability distribution  Reason :  P(x) ≥ 0 ΣP(x) = 0.087+0.336+0.410+0.167 = 1…

Q: For the binomial distribution P(x) = C7,x(0.4)*(0.6)7-X, choose the correct histogram below and…

A:

Q: Complete this PDF and find the expected value of X:

A: The P(x) for X = 2 is calculated as follows: PX=2=1-0.3+0.2+0.4               =1-0.9…

Q: x P(x) 0 0.05 1 0.05 2 0.05 3 0.85 Find the standard deviation of this probability distribution.…

A: X0123P(X)0.050.050.050.85

Q: x P(x) 0 0.15 1 0.25 2 0.1 3 0.5 Find the standard deviation of this probability distribution.…

A: x P(x) 0 0.15 1 0.25 2 0.1 3 0.5

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) 01 0.35…

A:

Q: variable with the following probability distribution. Value x of X P(X=x) 0 0.30 10 0.30 20 0.15 30…

A: From the provided information, The probability distribution is as follow: x P (X = x) 0…

Q: P(x) 0.3 0.3 2 0.05 3 0.35 X 0 1 Find the standard deviation of this probability distribution. Give…

A:

Q: Q1. For the following probability mass function, compute the Table 1: Probability mass function 150…

A: The provided information is as follows:The probability mass function is given as…

Q: Given the probability density function f(x) = over the interval 3, 8, find the expected value, the…

A: The probability density function represents continuous uniform distribution.

Q: A student takes a test in which they have to indicate whether each of n statements is true or false.…

A: It is interpreted that each statement has the only option of being "correct" (defined as success) or…

Q: x P(x) 0 0.05 1 0.1 2 0.1 3 0.75 Find the standard deviation of this probability distribution.…

A: Given Data :       X P(x) x * P(x) x Squared x^2 * P(X) 0 0.05 0 0 0 1 0.1 0.1 1 0.1 2 0.1…

Q: Given the probability density function f(x) = - 1 over the interval [2, 5], find the expected value,…

A:

Q: A probability distribution function is modeled by the following X-Y cartesian graph: 15 kT 长 6 7 12…

A: Solution Given

Q: In the following probability distribution, X represents the number of calls a telemarketer makes in…

A: a) The total probability is always 1.  Using that we get: P(X=175)= 1 -…

Q: the variance and the standard deviation. Expected value: Mean: Variance: Standard Deviation: > Next…

A: X~U(2,7)a=2,b=7

Q: The probability distribution for X and Y is shown by the table. Find the marginal distribution…

A: