Suppose that Var(X) = 744.35, Var(X) = 10024.48, and Cov(X,Y) = 2420.84. What is Var(.14X + .86Y)?

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Q: A random sample of students at Boatsville College was surveyed. Two of the questions on the survey…

A: equal less more total female 18 38 25 81 male 8 20 21 49 total 26 58 46 130

Q: 7. Let X₁, X2,..., Xn be independent variables, X; being N(µi, 1), and let y = = x² + x² +...+X²/2.…

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Q: self) has on the nu sonal profile views an of 230 views/da me information but domly selected fro…

A: Given, sample size (n) = 36 sample mean (x̄) =  250 sample standard deviation (s) = 60 population…

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Q: The height (in feet) and volume of usable lumber (in cubic feet) of 32 cherry trees are measured by…

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Q: Obtain the confidence limits for the ratio of variances of two normal populations.

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A: Given: Slope=140 y-Intercept=-353

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A: by bartleby policy i can give only one answers  44.4,51.7,59.3,55.7,39.6,49.4,58.4,68.5,39,63.9

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A: Drive the pdf of student's t distribution

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Q: What is circular systematic sampling?

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Q: What is the significance of R and R2 and of a regression model?

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Q: A company claims that the mean weight of coffee in its 16-ounce bags is 16.05 ounces. Consumer…

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Q: A simple random sample of size n = 17 is drawn from a population that is normally distributed. The…

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Q: QUESTION 16 The health of employees is monitored by periodically weighing them. A sample of 27…

A: Q-16))  n= 27 x¯ = 183s = 41.5α = 0.05claim :  μ<200

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Q: 9. A sequence of biased coins is flipped; the chance that the rth coin shows a head is Or, where Or…

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Q: Find a preference table for an election with candidates A, B, and C, where A wins using the Borda…

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Q: (a) Construct a 90% confidence interval about μ if the sample size, n, is 21. Lower bound:: Upper…

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Q: What do you understanding by a distribution function?

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Q: Perform the indicated goodness-of-fit test. 3) You roll a die 48 times with the following results.…

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A: from given data we have : z-score = 0.051

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Q: The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated…

A: Binomial formula has used to answer this question.