For x = 1, 2, 3 and y = 1, 2, let the joint pmf of X and Y be defined by f X,Y (x, y) = (x+y)/21 Show Corr(X, Y)

Q: In how many ways can 7 children join hands to form a circle? Select one: O a. 7!/2 O b. 7! O c. 6!(…

A: We have given that,  In how many ways can 7 children join hands to form a circle?

Q: Suppliers A and B have each sent us samples of 50 items to examine. We will choose between them to…

A: The following solution is given below:

Q: Claim: The standard deviation of pulse rates of adult males is more than 10 bpm. For a random sample…

A: Givensample size(n)=175standard deviation(s)=10.9

Q: A Normal Approximation to Binomial question: According to a survey, 34% of drivers tailgate other…

A:

Q: 8. A university polled 500 of its students, randomly selecting them proportional to the number of…

A: Given that a university polled 500 of it's students, randomly selecting them proportional to the…

Q: A Mathematics paper consist of 12 questions of which not more than 10 are to be answered. Given that…

A: Given: P(9 questions) = P(10 questions)  Let both have equal probability of 0.5

Q: A quality engineer selects 3 iPods from a box that contains 20 iPods of which 3 are defective. What…

A: Given that 17 - non defective 3 - defective 20 - total p ( first is not defective and others are…

Q: Nine impact wrenches are to be divided evenly among three assembly lines. a.) In how many ways can…

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Q: There are two machines available for cutting corks intended for use in wine bottles. The first…

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Q: A packing machine is set to fill a cardboard box with a mean average of 16.1 ounces of cereal.…

A: Given that.   X~N( μ , ?^2 )   μ=16.1  , ?=0.04   Z-score =( x - μ )/?   1 Pound = 16 ounces

Q: For a probability distribution X, if E(X) = 0.35 then E(3X-2) = Select one: O 1.05 O -1.05 O 0.95 O…

A: Assume that X is a random variable.

Q: How many numbers consisting of five different digits can be made from the digits (0, 1 , 2, 3, 4, 5,…

A: ConceptPermutation = n!/(n-r)!Given digits are 0,1,2,3,4,5,6,7,8,9

Q: 1. Show the range of (X,Y), Rxy, in the x – y plane. 2. Find the constant c. 3. Find the marginal…

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Q: b. What is the probability that a customer will spend more than 15 minutes in the bank given that he…

A: Note that here the distribution parameter is not mentioned , as it is to be taken exponentially…

Q: From a standard deck of playing cards, one card is selected at random. What is the probability of…

A: GivenTotal no. of cards in a deck =52No.of heart cards in a deck = 13No.of king cards in a deck =4

Q: 300 students were surveyed. 100 students from 3 different grades were identified and asked if they…

A: The probability of an event is the number of cases favorable to that event divided by the number of…

Q: deviation is 7.25 and it is normally distributed. What is the probability that a group of randomly…

A: here given , Supposed that the mean age of the employees of warrior's corporation is 45.5 years and…

Q: What is the probability of getting at most four (4) heads in tossing a coin five (5) times?

A: Given that n =5 ,p=0.5 ,p(x<=4)=?

Q: Determine the measure of position illustrated in each of the following. 1. A quiz was taken by 35…

A: Since you posted a question with multiple subparts, we will solve first three subparts for you. To…

Q: a) what is the probability of randomly selecting an 11th grad student given they own an iPhone? b)…

A: here use given table, and some basic rule of probability

Q: expected profit of 1 percent of the amount it would have to pay out upon death. Find the annual…

A: here take C = premium expected profit  = 1% of 200000 = php 2000 p(die during the year ) = 0.02 x=…

Q: The time required for the examinees to solve he same problem differs by two minutes. Together they…

A: This problem is calculative and comprise algebra.

Q: b. Set up intervals of random numbers that can be used to randomly generate the three cost…

A: Given The management of Brinkley Corporation is interested in using simulation to estimate the…

Q: ec. Find the probability that the next operation of the robogate will take 26.6 sec or less.

A: here mean = 22 sec standard deviation  = 2 sec x= processing time for the robogate

Q: In is required to seat five men and four women in a row so that the women occupy the even places.…

A: Given that In is required to seat five men and four women in a row so that the women occupy the even…

Q: John was born on February 28, 1999. It was a Sunday. February of that year had only 28 days, and the…

A: John’s birthday on 28 February 1999. Jacks birthday on 29 the February 2000. The total number of…

Q: 31. Find the probability of drawing a king or queen from a standard deck of cards. (ME or NME) *

A: Since, the exact question number is specified, we'll be answering the first question. Please…

Q: A 5 card hand is dealt from a standard 52-card deck. Then the cards are replaced, the deck is…

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Q: THERE ARE 3 ALGEBRA BOOKS AND 7 GEOMETRY BOOKS ON A SHELF. 10.) In how many ways can you arrange all…

A:

Q: Show complete solution One bag contains 6 white balls, 3 red and 4black balls, and a second bag…

A:

Q: Consider the following table. What is the probability that person uses social media frequently given…

A: Given that    Gen X Gen Z Total Use social media frequently often  30 70 100 Does not use…

Q: A chalk box contains 5 pink chalks and 4 white chalks. If three items are picked at random, assuming…

A: 9 Chalk=5 pink chalk+ 4 white chalk  n=3=sample  Let X be the number of pink chalk balls  Let p be…

Q: Between the hours of 2 and 4 p.m. the average number of phone calls per minute coming into the…

A: Given: The number of phone calls follows a Poisson distribution with mean = 2.5 calls per minute.…

Q: a) Find the marginal pdf's of X1 and X2 b) Are X1 and X2 independent? Why or why not? c) Find P(X1 <…

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Q: 26. A card is drawn at random from a standard deck of cards. Find the probability of drawing 2 or…

A: Given that  There are 52 card in the deck in which they divided into two color i.e red(26) and black…

Q: one box contains six red balls and four green balls. let 3 balls are randomly chosen from the box.…

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Q: Two balls are drawn in succession out of a box containing 7 red and 7 white balls. Find the…

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Q: 1. In how many ways can 3 boys and 2 girls be seated in a row for picture taking if the boys would…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Problem 3. A lottery gives you an award if you are able to choose correctly at least 5 numbers out…

A: Here it is without replacement model so use hypergeometric distribution

Q: Steve Burns, host of the first season of Blue' clues recently bids goodbye to the show. Assuming…

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Q: 7. The marital status distribution of the Selangor's female population, ages 15 and older, is as…

A: The categorical variable is marital status, it has 4 types. We have to test whether age group of…

Q: What is the probability that a product does not attain a good review

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Q: Suppose that the weather in a certain city is either sunny, cloudy, or rainy on a given day, and…

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Q: a. What is the probability that a random person tests positive? | Select ) b. John just got the bad…

A: here define events person have disease = A test Positive  = B

Q: Suppose that you have the following parameter estimates of a healthcare demand model: lnQd = 2.34 –…

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per…

Q: The average number of calls received by an operator is 10 calls per day. Find the probability that…

A: Given that  The average number of calls received by an operator is 10 calls per day. Find the…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 3.9…

A: Let X be the random variable from normal distribution with mean (μ) = 3.9 and standard deviation (σ)…

Q: 6. Random/ not random sample of the students in your class? list the first six students that come to…

A: Random sample is chosen randomly.

Q: 2. Discrete or continuous? а. the age of players on a hockey team b. the number of goals scored by…

A: Discrete Discrete data set is the data in which value is countable and finite. Example {1,2,3,4,6}…

Q: Two out of the following cities will be randomly selected for a feature in a travel show: milan, New…

A: By classical definition of probability, it is defined as the ratio of the number of cases favorable…