To complete this question, feel free to use software including Excel, R, Python, or online tools. In a normal distribution with mean 10 and variance 9, approximately 80% of values are smaller than what number? Pick ONE option 2.43 7.48 12.52 17.57

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

Q: Out of 100 people sampled, 61 preferred Candidate A. Based on this, estimate what proportion of the…

A: From the provided information, Sample size (n) = 100 From which 61 preferred Candidate A. Confidence…

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A: It is given that  For IT, sample size n1 = 8, M1 = 77 For ESS, sample size n2 = 5, M2 = 75 For PHN,…

Q: a) Show that the normal approximation to the binomial can appropriately be used to calculate…

A: Given that, X ~ bin(n = 201, p = 0.45) q = 1-p = 1-0.45 = 0.55 Show that a normal approximation to…

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A:

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Q: The number of sales calls by a sample of 25 pharmaceutical salespersons are provided in the table…

A: The number of sales calls by a sample of 25 pharmaceutical salespersons is provided below, 40 56…

Q: Write down the STANDARD ERROR OF ESTIMATE (COMPUTATION FORMULA)?

A: Introduction The standard error (SE) shows how diff. the pop. mean is likely from the sample mean.

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A: Answer:- Given, total number of flavours, n = 10 Purchase, r = 2 ( you can have 2 scoops of the same…

Q: 2. If y = XB + E,y= 1 8 -3 0 X= a. Find XX,(XX)-1,xy,yy. [1 2 10 1-4 3 【 1 ¹1 [ B = E2 E3 LE4.

A: Data given

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A: Given that Section with labs Section without labs x¯1=85 x¯2=79 s1=4.7 s2=6.1 n1=11 n2=17

Q: Question 15 The most important quality of a test or assessment instrument is objectivity. True O…

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Q: n 2005, the percentage of airline ticket purchasers who actually arrive to take their flight is 88%.…

A: Here given that p=0.88 and n is 54 and x is 47. So we know that mean =u= np=0.88×54=47.52 and  s.d.=…

Q: Consider two random variables X and Y for which we know Pr(X = x) = Pr(X = x|Y = y)for all possible…

A: It is given that  Pr( X = x ) = Pr(X = x / Y = y)

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A: Given data: 1, 2, 3, 3, 5, 6

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Q: Calculate var(Y) A) 92.25 B) 12.45 C) 8.55 D) 19.15

A: Given that, the joint probability distribution of (X,Y).       Y         0 5 10 15   0 0.02…

Q: 3. Which of the following two numbers is larger: (33) 93 or 63)

A: From the provided information, The numbers are as follow: 93309363

Q: Let n be a random sample from the exp(0) Show that X is a sufficient statistic for

A: Given  X~exp(θ)

Q: (a) Complete the ANOVA table A B level of study method of instruction interaction term error C…

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Q: Let X represent the full length of a certain species of newt. Assume that X has a normal probability…

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Q: What is the critical value z*  needed to construct a 99% confidence interval?   2.58 1.65 1.96…

A: GivenConfidence level=99%

Q: Suppose that a student collects sample data from their local fire department asking them about their…

A: Given Information: Sample size n=59 Variable A: Number of years the firefighter has been working.…

Q: Estimate the monthly sales if monthly advertising expenditure is 9900 dollars

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A: Given data set:

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Q: The vector (X,Y) has a distribution with density f(x, y) = 13e-13x1000) (x) 10.x)(v). Find E(Y|X =…

A: Let the joint distribution of X,Y has the density function is f(x,y)=13e-13x×1x   ; 0<x<∞,…

Q: he owner of Johnson’s used cars wants to know the average purchase price of used cars. A random…

A: Given that Random sample size (n) = 222 Mean price of cars  (x¯) =$29,483 Sample standard deviation…

Q: a. What was the mean for each group? b. Report the ANOVA in APA style. c. Was the test significant?…

A: The data is given on the adaptation for three groups. Mothers of LBW in an expt. intervention, in a…

Q: provide the NORMAL CURVE of the solution

A:

Q: The result of flipping three coins. Find P (exactly 2 heads) Find P (exactly one tail) Find P (at…

A: If we flip three coins then its sample space is written as: S=HHH, HHT, HTH, HTT, THH, THT, TTH, TTT…

Q: The Policy Manager is not totally convinced with the confidence interval estimated in (b), because…

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Q: A nutritionist claims that a particular exercise program will help participants lose weight after…

A: Suppose μd is the population mean differences of mean weights before and after exercise program.

Q: Of a random sample of 1,200 people in Denmark, 480 had a positive attitude toward car salespeople.…

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Q: How many different three-digit numbers can be made from 1, 3, 5, and 7, if you can not repeat any…

A: The total number of digits is 4. They are, 1,3,5 and 7.

Q: 108. What is the best regression model for the following bivariate data? logarithmic exponential…

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Q: As a researcher, you are interested in predictors of helping behaviors in adults. After consulting…

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Q: In manufacturing integrated circuits, the yield of the manufacturing process is the percentage…

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Q: For a data set of chest sizes (distance around chest in inches) and weights (pounds) of five…

A: Given: The linear correlation coefficient is r=0.933

Q: can you make those to Anova Test? Control: 10.3cm, 19.5cm, 19.8cm Experimental for 1.25ml: 18cm,…

A: Control  10.3cm  19.5cm  19.8cm Experimental for 1.25ml  18cm  18cm (2 plants) Experimental for…

Q: . A poll is conducted to see who football fans favored in an upcoming championship from the home…

A:

Q: A reading specialist wants to identify 3rd graders who scored the lowest 5% on a standardized test.…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 10