If X1, X2, and X3 have the multinomial distributionwith n = 2, θ1 = 14 , θ2 = 13 , and θ3 = 5 12 , find the jointprobability distribution of Y1 = X1 + X2, Y2 = X1 − X2,and Y3 = X3.

Q: If two stocks have variance σ2=16 each, could their covariance be equal to σ12 = 20

A:

Q: In the table below, add row percentages in parentheses next to the observed frequencies so that you…

A: Given information: The table of observed frequencies for alcohol use and cigarette use is given…

Q: Solve the two simultaneous equations to show how Q and P depend on u and v.

A: From given data we have; Demand:            Qd=β0+β1P+u ,Supply:            Qs=γ0+vMean:…

Q: The CLT states that the distribution of p is Select one: piN(0,1) p-q piN(p, b. piN(p, C. p-N (». )…

A: If p is the population proportion, then

Q: A doctor wishes to see whether the pulse rates of smokers are higher than the  pulse rates of…

A:

Q: Exercise 10. Suppose that A - N(1,4), B ~ N(-2,9), and assume that A and B are independent. (b) What…

A:

Q: Assume both follow a Normal distribution. What can be concluded at the a = .01 level of…

A: Given: n1 = 10 n2 = 10 α = 0.01 Formula Used: Test-statistic t = X1-X2sp1n1+1n2 sp =…

Q: A student in PSYC 227 class collects data for a class project. She asks 10 classmates to shoot 10…

A: The test is to check whether the variables X and Y are related or not.

Q: In the frequency distribution X     f 10   1 9     2 8     4 7     3 6     2 What is the sum…

A: The given data shows the frequency distribution.

Q: For the probability distribution, find d. P(y = 6) e. f(y = 4) f. f(y= 6) g. F(y = 5.5) h. F(4) f.…

A: Since total probability is always 1:P(Y=−2)+P(Y=−1)+P(Y=0)+P(Y=1)+P(Y=2)=1

Q: able belov. P(x.y) 2 0.025 0.015 0.010 0.050 0.030 0.020 0.055 0.075 0.050 0.150 0.090 0.060 0.100…

A:

Q: random variables with the same mean µ but possibly different variances σx2 and σy2. Imagine that X…

A:

Q: Experience has shown that a grade in MAT 2371 is normally distributed with mean 66 and variance 64…

A:

Q: A variable of two populations has a mean of 50 and a standard deviation of 12 for one of the…

A: Given that: The first population's sample mean and sample standard deviation are as follows:…

Q: d) Compute the mean # number of dogs per household. (Use your calculator, and write down how you did…

A: If 'x' be a discrete random variable, theprobability values and 'X' values are arranged in the…

Q: Given f(x) = { (x2+1)/30; x = -2,-1,0,1,2  0; elsewhere ] Find the mean and variance of X.

A: X-2-1012f(x)

Q: Solve the two simultaneous equations to show how Q and P depend on u and v.

A: From given information we have given: The demand for a commodity is : Qd=β0+β1P+uWhere,Q denotes…

Q: Consider a small ferry that can accommodate cars and buses. The toll for cars is $3, and the toll…

A: Solution: The marginal distribution is calculated as the summation of individual summation of…

Q: 6 The blood pressure of a diabetic taken at random has a normal distribution with mean 126 and…

A: Given that Diabetic--- Mean = 126 , variance = 60 Non diabetic --- Mean = 121 , variance = 40 P (…

Q: The profits of a mobile company are normally distributed with Mean of R.O (19x 10) and standard…

A:

Q: 21. (Ex) (Evx) -nEx% (E*)² -nE For n data points, the coefficients of the best-fit line, y = mx +b,…

A: given points :(1,0) (2,4) (3,5) n=3

Q: All random samples of size n = 9 are selected from a normal population with u = 55 and o = 10, and…

A:

Q: Lobsters vary in sizes. The bigger the size, the more valuable the lobster per pound (a 6-pound…

A: Given observation and Calculation is shown below The fraction is converted into decimal form x…

Q: (x2) = 375 and (x) = 17; find variance in x (x2) = 1721 and (x) = 31, find variance in (xy) = 27,…

A: Introduction: Variance and covariance are two mathematical terms that are commonly used in…

Q: Let X denote that number of years I will use my current computer, and Y the number of years that I…

A: X 1 2 3 Total Y 1 0.05 0.16 0.19 0.4 2 0.10 0.13 0.12 0.35 3 0.07 0.10 0.08 0.25 Total…

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: Suppose that X1, X2, X3 and X4, are independent and identically distributed with a mean of 2.5 and a…

A: Given that X1, X2, X3, X4 are independent and identically distributed with mean of 2.5 and standard…

Q: A lottery contains 100 tickets. It costs exactly one dollar to play. (And you don't get your dollar…

A: The answer is attached below,

Q: Q2: For the project, its data shown below find: Time in weeks that gives a probability of %97.5…

A:

Q: Speed test. A police radar always overestimates the speed of incoming cars by an amount that is…

A: Since the speeds are uniformly distributed, it is a linear plot, which means that with a certain…