Q5. A bag contains 9 white balls and 6 black balls. If a ball is chosen without looking, what is the probability that the ball will be black? a) 0.4 b) 0.5 c) 0.6 d) 0.9 Q6. The box and whisker diagram below indicates that the distribution of the data is: a) Negatively skewed b) Symmetrically distributed c) Positively skewed

Q: Where's b?

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Q: Suppose that a) b) f(x, y) = [15x²y; 0<x<y<1 0; otherwise. Compute E(X | y), Var(X) and Var(Y).…

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Q: a) b) c) P(X>Y+1), X-3 P(X=³ <c)=0.5 S a constant c such that P standard deviation of X, <c=0.95…

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Q: In humans, the presence of freckles is a dominant trait and their absence is a recessive trait. The…

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Q: Find the conditional probability of the given event when two fair dice (one red and one green) are…

A: find the conditional probability of the given event when two fair dice are rolled. P ( red one is 2…

Q: depth is between 1 mm and 2 mm.

A: From given data: Mean =μ=0.353 Standard deviation =σ=0.754

Q: (b) Find the probability density function of Y= X

A: A random variable X has a probability density function: f(x)=0; x&lt;012; 0≤x≤112x2; 1&lt;x&lt;∞

Q: A baseball player has a lifetime batting average of 0.213. If, in a season, this player has 365 "at…

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Q: Instructions: Identify p, n, and r for Problem 17(a) in the textbook, which is reproduced here. 17.…

A: Given: Sample size n=12 55% of the wolves are males i.e., p=0.55 r=0 to 12

Q: for part1 ,but the model ans is 0.159,is that model ans

A: Given: Total number of sides in a die = 12 Number of dice = 2 Q = product of 24.

Q: 3. On 60% of days, a hospital admits at least one heart attack patient. On 40% of the days, no heart…

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Q: A family doctor books 10-minutes Zoom appointments for each patient starting with 9:00 a.m. each…

A: Given that.   X~N( μ , ?^2 )   μ=9.5     , ?=2   Z-score =( x - μ )/?

Q: In how many distinct orders can the sweaters be arranged if two sweaters of the same color are…

A: HERE GIVEN , A sales assistant is hanging 11 sweaters on a rack. He has 5 green sweaters, 3 pink…

Q: Assume the random variable X has a binomial distribution with the given probability of obtaining a…

A: Binomial is a distribution in which has two parameters. It has two types of outcomes only. In this…

Q: 17 cards are numbered 1 to 17. One card is taken at random. What is the probability that the number…

A: Followings are the Explanation of the question

Q: Assume there are two individuals to be tested in Covid-19. Assume that z is a random variable that…

A: It is given that there are 2 individuals to be tested on Covid-19. So sample size is n=2 z…

Q: a) b) Compute E(X|y), Var(X) and Var(Y). Hence, deduce the value of p= Corr(X,Y).

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Q: Find the complete possible outcomes and values of the given situation. Use table to represent the…

A: There are 8 purple balls. f= 8 The total balls are N= 10+9+8= 27

Q: Find the margin of error and 95% confidence interval for the following study. A survey of 1974…

A: Given sample size(n)=1974sample proportion(p^)=88%=0.88confidence level=95%

Q: What is the value of Σ(X – 2 )2 for the following scores? Scores: 3,6,9.

A: The values of X are given by 3,6 and 9. We have to calculate Σ(X – 2 )2

Q: Number of cars sold, X Probability, P(X) 0 1 2 3 4 Compute P(1 < X <3). Select one: O a. 0.40 b.…

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Q: Two fair dice are rolled and the sum rolled is recorded. What is the probability that the sum is at…

A: Given data Two fair dice are rolled and the sum is recorded

Q: Q5. A bag contains 9 white balls and 6 black balls. If a ball is chosen without looking, what is the…

A: As per our guidelines we are suppose  to answer only one question5)GivenNo.of white balls = 9No.of…

Q: Heights (in centimeters) and weights (in kilograms) of 7 supermodels are given below. Find the…

A: Followings are the Explanation of the question

Q: Highgree earned Percent of population (fo-fE)² JE Less than high school Part 1 12% High school 25%…

A: Given:   Percent of population,p Observed,Fo Less than high school 0.12 19 High School 0.25…

Q: A five card hand is dealt from standard deck . What is probability that hand contains exactly two…

A: GivenTotal no.of cards in a standard deck = 52No. of black cards in standard deck = 26    No. of non…

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Q: 12.55 Playing Pick 4. The Pick 4 games in many state lotteries announce a four- digit winning number…

A: We have given that the choosen number is 5974 There is four digit winning number each day  So,…

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Q: If A and B are independent events with P(A) = 0.6 and P(B) = 0.3. Find the P(A/B) Select one: a. 0.4…

A: Given,P(A)=0.6P(B)=0.3and A , B are independent events.

Q: 4. If the sum of the variance of the activities on the critical path is equal to 25 weeks and the…

A: Given information- Expected time to complete the project, E = 65 Weeks Variance of the activities on…

Q: An urn contains 2 one-dollar bills, 1 five-dollar bill and 1 ten-dollar bill. A player draws bills…

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Q: Consider the bathtub model of unemployment, with a separation rate s=0.1 and a job finding rate…

A: The bathtub model of unemployment, with a separation rate s=0.1 and a job finding rate f=0.3. In…

Q: A random variable X has a probability density function ; x < 0, 0≤x≤1, ; 1<x<∞0. f(x)= (b) 0 For the…

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Q: The mean of a normal probability distribution is 440, the standard deviation is 8 a. About 68% of…

A: As per Empirical rule, About 68 Percent of the data lies within one standard deviation from mean,…

Q: The ticket booth on the Tech campus is operated by one person, who is selling tickets for the annual…

A: Given : The ticket seller can serve an average of 2 minutes per customer  On an average 21 customers…

Q: Determine the probability for each of the following event. A non- defective bolt will be found if…

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Q: if Y = X₁² + X3, what is the probability that Y is at most 12.833? 2X₁ Find the value of τ such that…

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Q: The green urn contains millions of marbles, 31% are orange. If a simple random sample of n = 40000…

A: p=0.31 q=0.69 n=40000 x=12476 mean=np=40000*0.31=12400 standard deviation=√(npq)=√(40000*0.31*0.69)…

Q: Serial numbers for a product are to be made using four letters followed by three digits. The letters…

A: Number of arrangement of data studied using various measures. Some of the measures are permutation…

Q: Consider a political discussion group consisting of 5 Democrats, 6 Republicans, and 4 Independents.…

A: Given data  5 - Dernocrats, 6 - Republicans 4 - Independent  15 - total Two group of members  are…

Q: Suppose that on each play of a certain game a gambler is equally likely to win or to lose. Suppose…

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Q: The probability is 0.0623 that the 7th applicant for a factory job will be hired on the 13th…

A: Followings are the Explanation of the question Use the Binomial Distribution

Q: (1) True or false: Whenever there are 19 girls and 19 boys are seated around a circular table, there…

A: There are 19 Girls and 19 boys.  To make them sit around a circular table the sequence can be,   G G…

Q: 7.1 John, Pedro and Rosita each roll one fair die. How do we calculate the probability that the…

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Q: Scores on a test are normally distributed with a mean of 76 and a standard deviation of 6. Using the…

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Q: If the probability distribution for the random variable X is given in the table, what is the…

A: The expected value of X is calculate as E(X) = ∑x.p(x)

Q: Suppose (i) X, has a pdf f₁(x₁) = - x₁²e-x²/2 16 0 X₂ has a pdf f₂(x₂) = { x₂²e-x₂²³/2 4 0 (iii) X,…

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Q: 2. We randomly select a batch of 25 computer disks for shipment. The probability of selecting a good…

A: The Given batch is 25 computer disks for shipment. To find the size of your sample spaces.

Q: Question: Suppose that a research institute is trialing a new medication that is believed to improve…

A: In this Scenario we qill be using Stratified Sampling. Stratified Sampling allows us to devide the…