We are throwing a die twice. Find the distribution of the random variable |X – Y|= (difference of scored points). Find its mean value and variation. [Ans.E(|X – Y|) = 1, 94 ]

Q: Pat is required to sell candy bars to raise money for the 6th grade field trip. There is a 40%…

A: p=0.40 5 candy bar is to be sold

Q: A sample of blood pressure measurements is taken from a data set and those values (mm Hg) are listed…

A: A sample of systolic and Diastolic blood pressure measurement is given.

Q: Answer all parts. If the random variable x takes the values 1, 2, 3 and 4 such that 5p (x=1)=4p(x=2)…

A: Let , P(X=3) = θ then, P(X=1) =15θ P(X=2) =14θ P(X=4) =13θ

Q: Let X and Y be two independent random variables. If the variance of X is 12 and the variance of Y is…

A: let x and y be two independent random variables if the variance of x is 12 and the variance of y is…

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A:

Q: The probability of a defective bolt is 2. Find (a) the mean and S.D. for the distribution of…

A:

Q: If X1, X2, ., Xn is a xrandom sample from a N(H, o) population, write the distribution of (x1-µ)/o)?

A: We e have given that If X1 , X2, X3 ......Xn is a random sample from N(mu, sigma) population then…

Q: The data represent the results for a test for a certain disease. Assume one individual from the…

A:

Q: P(x) x•P(x) | X2•P(x) 19 0.20 20 0.20 21 0.30 22 0.20 23 0.10 2.

A: Given that x P(X=x) 19 0.20 20 0.20 21 0.30 22 0.20 23 0.10 I want to find variance…

Q: 3. Find the mean and variance of the random variable using the values in the table below. f(x) 0.25…

A: For the given data Find Mean =? variance =?

Q: x is a normally distributed random variable with a mean of 3 and a variance of 4. Find the…

A: Given that X follows a normal distribution with mean=3 and variance=4. So standard deviation=4=2We…

Q: The probability distribution for the number of houses on a street is given, but one value is…

A: XP(X)220.16230.2240.2325?260.18

Q: Find the variance of the number of storms in August.

A: X: Number of thunderstorms in August.

Q: in a distribution of 600 values the mean is 90 and the variance is 225. answer each using…

A: Chebyshev's inequality : Chebyshev's inequality then implies that the likelihood of an observation…

Q: HELP I NEED IN ONE HOUR. The first box options are "greater than" or "less than or equal to".…

A: Given data: Significance level = 0.01

Q: Jessica hypothesizes that giraffes will look longer at human infants than at adults. In her zoo, she…

A: It is given that Jessica hypothesizes that giraffes will look longer at human infants than at adults…

Q: We have provided a normal probability plot of data from a sample of a population. In each case,…

A: Requirement for normal distribution: If the plot is roughly linear, then the variable is…

Q: A sample ofn observations has a sample mean of x = 100 and variance of o? 100. If a new observation…

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Q: d. The probability that the wave will crash onto the beach between 1.5 and 1.8 seconds after the…

A:

Q: ASsume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: We have to find  correct answer of graph and probability...

Q: X1, X2, and X3 all have a normal distribution with mean 1 and variance 1 AND they are all…

A:

Q: Consider the probability mass function below: x2 – 1 f(x) = ; x = 1,2,3,4 or 5 k ; otherwise a.…

A:

Q: a. A random variable X has the following probability distribution: 0 x 18 5x 18 10 x 18 15 x 18 20 x…

A:

Q: Direction: Tell whether each variable is DISCRETE Or Co 1. Time required for a vehicle to cover 20…

A: Continuous variable A continuous variable is one whose value is derived via measurement and can take…

Q: A sample of n observations has a sample mean of �̅x= 100 and variance of σ2 =100. If a new…

A:

Q: Which of the following is a good point estimator for the population mean? 1 b 2 42 S 2 42 X I.

A: The objective is to identify a good point estimator for the population mean.

Q: The random variable X has a binomial distribution with n=20 and p 0.01. What is the mean and…

A: As in binomial distribution  Mean = n*p variance = n*p*(1-p)

Q: 3. You are given k|940 = k/78 for k = 0, 1, ..., 12 a) Find the probability that (40) dies between…

A: Given information is,Probability density function(PDF)The given probability distribution function…

Q: The probability Pete will catch fish when he goes fishing is 0.6. Pete is going fishing 4 days next…

A:

Q: If variances are unequal, you pool the variances

A: State and explain whether the given statement is true or false.

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: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: From the provided information, Mean (µ) = 0 Standard deviation (σ) = 1 X~N (0, 1) Here X be a random…

Q: A vertical line drawn through a normal distribution at z = –1.00

A: Given that, A vertical line drawn through a normal distribution at z = –1.00.

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.