x 100 125 150 Tete probability distribution. P(x) 0.25 0.30 0.45 a. Calculate the expected value of x. b. Calculate the variance of x. c. Calculate the standard deviation of x.

Q: X P(x) 3 0.25 0.3 9. 0.1 12 0.35 Find the mean and standard deviation of this probability…

A: Solution

Q: random variable x represents the number of credit cards that adults have along with the…

A: Let X be the random variable having probability mass function is, XP(X) 00.0710.6820.2130.0340.01

Q: P(x) 0 0.05 0.15 2 0.25 3 0.55 Find the standard deviation of this probability distribution. Give…

A: Solution: 0 0.05 0 0 0 1 0.15 0.15 1 0.15 2 0.25 0.5 4 1 3 0.55 1.65 9 4.95…

Q: x P(x) 0 0.05 1 0.15 2 0.15 3 0.65 Find the standard deviation of this probability distribution.…

A: Given data, X P(X) 0 0.05 1 0.15 2 0.15 3 0.65   Standard deviation=?

Q: GPA of students enrolled at a university has an approximately normal distribution with a mean of…

A:

Q: Q/ The probability distribution of random variable X is: 3. P(x) 0.1 0.3 0.5 0.1 iTY-X+2X Find: 1.…

A: Given Y= X2+2X So we find Y for every X X 0 1 2 3 Y 0 3 8 15 P(Y) 0.1 0.3 0.5 0.1

Q: Derive the mean and variance of the t distribution.

A: Given that We have to derive the mean and variance of t distribution:

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: The number of earthquake notifications per year in a community follows the probability mass function…

A:

Q: VI X has normal distribution and P(X>73.05) = 0.0289. Given that the variance of the distribution is…

A: Given Data: X~ N(Mean,  Variance) Sd=root(18)   P(x>73.05)=0.0289

Q: X P(x) 0.05 0.15 0.15 3 0.65 012 Find the standard deviation of this probability distribution. Give…

A: Probability mass function of Xx0123P(x)0.050.150.150.65

Q: X P(x) 2 0.15 6 0.15 0.1 12 0.6 Find the mean and standard deviation of this probability…

A:

Q: Find the mean, variance and standard deviation for the probability distribution given below. Give…

A: Sample Mean: Sum of observations is divided by number of observations in the sample is named as…

Q: x P(x) 0 0.25 1 0.25 2 0.05 3 0.45 Find the standard deviation of this probability distribution.…

A:

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: The random variable X represents the number of tests that a patient entering a hospital has. Find…

A: The question is about discrete prob. dist. Given :

Q: P(x) 0 0.15 1 0.05 2 0.05 3 0.75 Find the standard deviation of this probability distribution. Give…

A:

Q: Measuring lung function: One of the measurements used to determine the health of a person's lungs is…

A: Given: μ=2.1σ=0.5n=70x¯=2.03 Hypothesis: Null hypothesis: H0: μ=2.1Alternative hypothesis: H1:…

Q: x f(x) 20 0.10 25 0.20 30 0.25 35 0.15 40 0.10 45 0.10 50 0.10 compute expected value, variance,…

A: We want to find mean, variance and standard deviation

Q: X P(x) 0 0.05 1 0.1 2 0.2 3 0.65 Find the standard deviation of this probability distribution. Give…

A: The formula to calculate the standard deviation is:

Q: The random variable is the number of persons living in a randomly selected occupied housing unit.…

A:

Q: The Wilson family was one of the first to come to the U.S. They had 9 children. Assuming that the…

A: I will use excel formula "=BINOM.DIST(x, n, p, FALSE)" to find the probability. x n p Excel…

Q: Measuring lung function: One of the measurements used to determine the health of a person's lungs is…

A: Given: Hypothesized population mean is μ0=2.1. Sample size is n=35. Sample mean is x¯=1.98…

Q: The random variable x represents the number of boys in a family of three children. Assuming that…

A: Answer; - Given a probability distribution                 x P(x) x*P(x) x^2*P(x) 0 0.125 0 0…

Q: X 0 1 2 3 4 P(X) 0.2 0.2 0.11 0.43 ? Complete the distribution table and find Variance of X.

A:

Q: Fairfield Homes is developing two parcels near Pigeon Fork, Tennessee. In order to test different…

A: (1) That is, there is no evidence to conclude that population means are different That is, there…

Q: X P(x) 0.1 0.1 2 0.25 3 0.55 1 Find the standard deviation of this probability distribution. Give…

A: According to the given information, we have The probability distribution table is given by, X…

Q: x P(x) 0 0.2 1 0.05 2 0.2 3 0.55 Find the standard deviation of this probability distribution.…

A: The given probability distribution is: x P(x) 0 0.2 1 0.05 2 0.2 3 0.55

Q: Find the standard deviation of this probability distribution. Give your answer to at least 2 decima…

A: Table with necessary calculation is given as:

Q: Find the mean and standard deviation of this probability distribution

A: The mean is defined as Mean = E(X) = ∑x.px And E(X2) can be calculated as∑x2·px Then Standard…

Q: Let the random variable X = the number of motor vehicle accidents per student in one year. Find the…

A: Given data is  x 0 1 2 3 4 5 probability 0.15 0.29 0.25 0.18 0.10 0.03

Q: P(x) 0.2 1 0.1 2 0.25 3 0.45 Find the standard deviation of this probability distribution. Give your…

A:

Q: deviation. Draw a graph of this probability distribution. 2 = 2.1 Round the probability to four…

A:

Q: The random variable Z has the probability distribution shown below If  E(Z) =4 2/3find the values…

A: Given Information: The probability distribution of the random variable Z is given as: z 2 3 5 7…

Q: Age of an animal (X) has the normal distribution with mean = 5, variance = 9; find the probability…

A:

Q: Expected value of a random variable X is 0.20. X2.P(X) = 0.35. Standard deviation %3D of the random…

A: Expected value of a random variable also knowns as mean, is computed using μ=∑X·P(X), where X is the…

Q: probability distribution and has a mean value of 25 and a variance of 9. Calculate: i. P(X > 26)…

A: Given that  Mean = M =  25 , Variance = V = 9 , Standard deviation = SD = 3

Q: Let the random variable x have a normal distribution with a mean value of 70 and a variance of 25.…

A: Given data: Mean = 70 Variance = 25 To find: P (x < 80 ) = ?