Heights (in inches) obtained by a group of people in a random survey is reported in the table. What is the expected height (in inches)? Heights 55 60 65 70 75 80 85 90 Probability 0.007 0.024 0.112 0.357 0.357 0.112 0.024 0.007

Q: 2. A random variable X = {0, 1, 2, 3} has probability mass function: 1 1 2 Px(0) = Px(1) = Px(2) =…

A: X~{0,1,2,3}

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Q: A variable has a population mean of μl: = 100 and a population standard = 27. deviation of = The…

A: From the provided information,

Q: et A, B, and C be independent events with P(A) = 0.3, P(B) = 0.6, and P(C) = 0.75. Then, P(A'∩B∩C')…

A: It is given that A, B, and C are independent events with P(A) = 0.3, P(B) = 0.6, and P(C) = 0.75.It…

Q: X₁~N(0,1),i=1,..., n and they are independent of each other, then X₁ + X ( ) distribution.

A: Given that, they are independent of each other.We are asked to find the distribution of .

Q: The joint probability distribution of the random variables is f(x,y)= 8xy, 0<=y<=x<=1. fine the…

A: The joint probability distribution of the random variables is

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A: How students studyMorningBetween classEveningTotalStudy in grp49720Study in alone96722Total13151442

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A: We have to find the z-score that has 75.5399% of the distribution area to the right

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Q: 12. Suppose that P(E)=0.82, P(F)=0.63, and P(EF) = 0.12. Find the following:

A: P(E)=0.82 ,P(F)=0.63and P(Ec ∩ F)=0.12

Q: (c) An insurance company has observed the number of accidents that an individual has suffered on…

A: (c)Given, follows a gamma distribution with shape parameter  are independent random variables ,each…

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A: The amount company has to pay if the individual dies = $19,000The probability the individual will…

Q: You have a sample with the following scores: 2, 4, 6 What is the probability of obtaining such a…

A:

Q: 2. Suppose X and Y each have an exponential distribution with parameter a, find the joint p.d.f of X…

A: Suppose X and Y each have an exponential distribution with parameter .

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A: Regression equationY=0.86x+3.93

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Q: Suzan sees a bag of marbles; she grabs a handful at random. She has seen a bag containing 4 red…

A: 4 red marbles3 green marbles2 white marble1 purple marble

Q: Butch has a collection of 40 vinyl records from throughout the 20th century including seven from the…

A: The data is given as-Total number of persons = 40Number of persons in 40s = 7Number of persons in…

Q: The sample space contains 9 As and 7 Bs. What is the probablity that a randomly selected set of 3…

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A: Mean() = 42.20Standard deviation() = 0.035

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A: Margin of error(E)=4%=0.04confidence level=99%

Q: What is the probability that the sum of the numbers is 40?

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Q: P(X ≤ 1 and Y≤ 1) = 0.41 (c) Give a word description of the event {X = 0 and Y# 0}. At most one hose…

A: Let X and Y have a joint pmf

Q: Question 3 * We candomly select one ball from Containing 12 red and 10 blue balls. Find the…

A: Total balls = 12 + 10 = 22Red balls = 12, Blue balls = 10

Q: Let X1,...,Xn be a random sample from a distribution with mean μ and variance σ2. Find the value of…

A: Given X1, X2, ……, Xn be a random sample from a distribution with mean µ and variance σ2.

Q: (a) Probability (b) Probability 0.6, P(BIA) = a one is received. a one is transmitted given that one…

A: It is given that P(A) = 0.6P(B/A) = 0.9P(B/A') = 0.5

Q: for the first part, could u tell me why the lower bound is 0 rather than x? We can see from the…

A: Expressing E(Y∣X) in terms of X:The conditional expectation of Y given X is defined as:E(Y∣X)=…

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Q: Find the indicated probability.   If​ P(A or ​B)=0.6​, ​P(A)=0.2​, and​ P(A and ​B)=0.15​, find​…

A: P(A or B) = 0.6, P(A) = 0.2, P(A and B) = 0.15

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A:

Q: 20. If P(C) = 0.5, P(B) = 0.25, and C and B are mutually exclusive events, what is P(B or -C)?

A: It is given that P(C) = 0.5P(B) = 0.25

Q: P(z> -1.062) = (Round to four decimal places as needed.)

A: X~N( μ , ?)μ=0 , ?=1 For standard normal distribution.Z-score =( x - μ )/?

Q: Whenever Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing…

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Q: Compute the number of passwords possible that satisfy these conditions: Password must be of length…

A: Password Length: You need to know the length of the password, which is given as 5 characters in this…

Q: Candidate A and Candidate B have a hotly contested race for Florida's electoral votes. Suppose each…

A: P=0.5003We have 8084000 voters in Florida

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Q: A university changed to a new learning management system during the past school year. The school…

A: The data set is,Prefers Old LMSPrefers New LMSNo PreferenceSchool of Business18298School of…