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Q: Required: A statement of the number of engineers, employees and workers who make up this sample.

A: here given ,  A random sample of 30 is chosen from population of 130 professionals  there are 30…

Q: Mean value of a random sample of 60 items was found to be 145 with standard deviation of 40. Find…

A: The question is about confidence interval Given : Sample size ( n ) = 60 Sample mean ( x¯ ) = 145…

Q: Player Distance yards Accuracy% 316.9 304.6 310.8 312.8 52.1 294.9 64.3 291.8 63.8 295.5 62.2 8…

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Q: 1- Let n and r be positive integers such that r≤n. Then (a) P = nx P-1 (c) P = pn a O b O d n-1 (b)…

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Q: 4β) 5 482/25 28 -10-t(n-1)

A: Random variable can be α=4,β Mean and variance can be, E(X)=αβ=4βVar(X)=αβ2=4β2 Size of sample is…

Q: (e) Explain what the regression coefficient indicates? (f) Use the equation for the line of…

A: The provided information for Yahya student is  Force (N) (x) Length (mm) (y) xy x2 0 10 0 0…

Q: Let X and Y have a bivariate normal distribution with parameters p₁= 5.4,0₁ = 1.5, 25.10.₂= 2 and p=…

A:

Q: a= 0.05. Is there sufficient evidence to conclude that there is a linear correlation between the two…

A: Correlation analysis  Note that I used R software for my calculations.

Q: 1. The average number of cycles of charging of rechargeable batteries manufactures in a certain…

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Q: Casey is going to wear a gray sport coat and is trying to decide what tie he should wear to work in…

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Q: 52% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults.…

A: Answer:-  Given,  52% of U.S. adults have very little confidence  in newspaper.  i.e  P = 0.52…

Q: Assume that a sample is used to estimate a population mean u. Find the margin of error M.E. that…

A: Given information Sample size (n) = 10 Sample mean x̅ = 33.8 Standard deviation (s) = 13.8…

Q: Pandora, the owner of a food delivery app, knows from experience that the time needed to assemble a…

A: let X: the time needed to assemble a food delliveryX~N(μ,σ)where mean(μ)=30 minutesand standard…

Q: A recent survey found that 70% of all adults over 50 wear glasses for driving. In a random sample of…

A: A random variable x is following the binomial distribution with the following probability mass…

Q: Question 3 You have been given a sample data set related to sales revenue and advertising…

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Q: Calculate the correlation coefficient, r, for the data below. x-14 -12 -5 -8 -10 -11 -9 -7 -6 -13 -…

A: Given data is x -14 -12 -5 -8 -10 -11 -9 -7 -6 -13 y -1 1 18 10 7 3 8 12 15 1

Q: Suppose X, Y and Z be random variables with j.p.m.f. f(x, y, z)= kxyz with x E {1,2}, y = {1, 2, 3),…

A: Given information: The value of k is obtained below:

Q: EDSA Sang Hotel conducted a survey on 7 randomly-picked employees to check on how they feel about…

A: To find: The 95 % confidence interval

Q: Taxes: The Internal Revenue Service reports that the mean federal income tax paid in the year 2010…

A: Answer : -  Given,   Mean( μ)= 8040   , standard deviation(σ)= 4800 , sample size (n)=1000       (a)…

Q: What is a discrete probability distribution? What are the two conditions that determine a…

A: Discrete probability distribution:  A discrete random variable is a variable which can only take on…

Q: What is the p value and z value?

A: The sample sizes are 400 and 500.

Q: A lucky dip at a school fête contains 100 packages of which 40 contain tickets for prizes. Let X…

A: Number of packages(n)=100 Number of packages containing tickets for prizes(x)=40 X denotes the…

Q: The time (in number of days) until maturity of a certain variety of tomato plant is Normally…

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Q: An analyst of EDSA Sang Hotel sampled 20 customers from last year's records and found out that the…

A: The question is about t test for difference between two pop. means Given : Sample no. of customers…

Q: As the size of a sample increases, the standard deviation of the distribution of sample means…

A: Here  Standard deviation of sample mean = σn

Q: 5. Omitting relevant regressors from the model results in OLS estimators that are: a. biased but…

A: I will answer question 5 since the exact one wasn't specified. Please resubmit the new question…

Q: f(x, y) = 1/12 1/6 1/3 0 , (1,2), (3,2) , (2,2), (3,3), (1,3) , (2,4) , otherwise joint probability…

A: Given:- joint mass function of two random variable is given. To find the expection of the given…

Q: For numbers 23-25, please refer to the problem below. A normally distributed variable has a mean =…

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Q: Determine the force in each member of the loaded truss. Explain why knowledge of the lengths of the…

A: Given that,

Q: A medical test is available to determine whether a patient has a certain disease. To determine the…

A: Given Information: Total number of people is 10300 Number of people who have the disease is 300…

Q: [Q1] From the letters {A, B, C, D, E, F, G}, how many: (a) 3-distinct-letters codes can be…

A:

Q: 140,000 120,000 100,000 80,000 60,000 40,000 20,000 0 Sales Quarterly Revenue Chart-2020 Interest…

A: Solution: The chart for the quarterly revenue for the year 2020 is given.

Q: Determine the probability of the card being either a red or a king when one card is drawn from a…

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Q: Use the given information to find the minimum sample size required to estimate an unknown population…

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Q: T =¯d/SE(¯d) I need answer within 3 minutes with my best wishes ton .A True .B False

A: Given: t=d¯SEd¯

Q: A certain company produces and sells frozen pizzas to public schools throughout the eastern United…

A: Given:The data is given.Year (x) :Indepenndent variableRevenue (y): Dependent variable

Q: (a) P(5)= (Round to three decimal places as needed.) (b) P(x26)= (Round to three decimal places as…

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Q: A study was done on body temperatures of men and women. The results are shown in the table. Assume…

A:

Q: In Normal distribution, the highest value of ordinate occurs at O Mean O Variance Same value occurs…

A: The question is about property of normal distribution

Q: Determine whether the claim stated below represents the null hypothesis or the alternative…

A:

Q: Suppose the Department of Energy in the Philippines surveyed 200 gasoline stations to determine the…

A: Number of gasoline stations surveyed =200 The average price per liter of special gasoline=39.80

Q: Suppose that a Markov chain has the following transition matrix a az az agas 000 The recurrent…

A: Theoretically a state i, upon entering which if the process definitely (infinitely often) returns to…

Q: Question 2 Use the table of measurements of length and force that you have been supplied with to…

A: Scatter plot is the graphical representation of the relationship between two variables of a…

Q: The following table shows the number of hours spent for studying and the grade obtained by a student…

A: Since you have posted more than one question, I can answer only first question for you. Given data :

Q: "Most people drink two glasses of water per day," is an example of the use of a) mean b) median c)…

A: Most people drink two glasses of water per day. This is an example of  Mode  Because The most…

Q: The following Markov chain is irreducible 1/3 0 0 0 1 1/5 2/3 0 4/5

A:

Q: Bought a new car lately? The following table presents the number of vehicles sold in a certain…

A: The table represents the number of vehicles sold in a certain country by several manufacturers.

Q: A quality control supervisor inspects a production of 35 computer chips, 5 of which are defective.…

A: In this case, it may be interpreted that, each chip has the only options of being "defective" (i.e.,…

Q: Assume A and B are independent events with P(A)= 0.42 and P(B) = 0.65. Find (a) P(A n B). (b)…

A: "Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: The probabilities of events A, B, and An B are given. Find (a) P(A U B), (b) the odds in favor of…

A: Since you have posted a question with multiple sub-parts, we will first 3 sub-parts for you. To get…