Find probable error, when the coefficient of correlation is 0.8 and number of items is 64 and interpret the value of r.

Q: The following is a monthly trend equation : Y. = 20 + 2X [Origin : Jan., 1992 ; Convert it into an a...

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Q: The covariance of two perfectly correlated variables X and Y is 96. Determine ox and Oy if it is kno...

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Q: et x be the number of red balls among 3 balls randomly selected from a bag containing 9 black ball a...

A: Given that  x = The number of red balls among 3 balls randomly selected from bag. Number of black ba...

Q: 2. Monica is currently teaching basic mathematics at a university. She wants to know if there is a d...

A: Given information: Students Multiple choice Problem solving Fill in the blanks 1 65 45 55 ...

Q: Given a population of class sizes at a university in an academic year, indicate what the sampling di...

A: Given a population of class sizes at a university in an academic year, indicate what the sampling di...

Q: Attitude towards old age and depression was studied in a group of ten old people and following is th...

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Q: The following data shows how many employees showed up to work every day for two weeks 12 18 09 16 11...

A: We have given that data  I want to find interquartile mean and standard deviation.  Interquartile ra...

Q: of the popelation 2,4, compute Hun b) Mu Ho,--Ue d) Cu, e) 'v. amd け) ry-V。

A: Two populations are  U1 : 3, 7, 8 U2 : 2, 4 Note : According to our guidelines we are solving only f...

Q: (a) What are the null and alternate hypotheses? 0.001 0.010 (b) Suppose the P-value is approximately...

A: ANOVA(parametric test) and Kruskal Wallis (non parametric test) both are used to compare the average...

Q: The covariance of two perfectly correlated variables X and Y is 96. Determine ox and Oy if it is kno...

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Q: Does risk classification in prison affect the likelihood of being rearrested after release? Low Medi...

A: Given:

Q: Tabulate the following: A leading departmental store divided into five main sections-grocery, vegeta...

A: Given that, A leading departmental store divided into five main sections-grocery, vegetables, medici...

Q: Following is the data of sales figure of a company for 100 days: Compute the average deviation. Sale...

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Q: The following results were obtained when two sets of items were subjected to two different treatment...

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Q: Attitude towards old age and depression was studied in a group f ten old people and following is the...

A: Given : Subjects Attitude Towards Old Age Depression 1 15 27 2 12 26 3 16 34 4 14 29 5 ...

Q: 2. Consider the following sets of replicate measurements: B A 0.314 mg 0.320 mg 0.317 mg 0.319 mg 0....

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Q: Example 8.17 (Public Opinion Polling) We would like to estimate the portion of people who plan to vo...

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Q: A pediatrician wants to determine the relation that exists between a child's height, x, and head cir...

A: It is known that y represents the value of head circumference in inches and x represents the value o...

Q: 1. Suppose that the number of wildfires in a season is Poison distributed. We assume that the prior ...

A: Given Number of wildfires in a season is Poisson distributed with the prior distribution of paramete...

Q: A fair die is rolled three times. What is the probability of obtaining at least two 5's? P(at least ...

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Q: Construct the confidence interval for the population mean μ.   c=0.98​, x=7.7​, σ=0.3​, and n= 47   ...

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Q: As shown above, a classic deck of cards is made up of 52 cards, 26 are black, 26 are red. Each color...

A: Total number of cards in a deck = 52 Number of 9 of hearts  = 1 Number of spades card = 13 Number of...

Q: Assuming that a study on risk management practices among 848 entrepreneurs is being made and some of...

A: Element is a collection of data organized in a table.  

Q: What is moving average? What are its uses in analysis of time series? Given the numbers 2, 6, 1, 5, ...

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Q: 1. Researchers want to find out that the average heart rate of male college students is greater than...

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Q: Please do STEP 1 only. STEPS IN THE SAMPLING PROCESS: Define the population from which the sample ...

A: 1. A pop. is an entire group of individuals from which a sample is drawn.

Q: The J. R. Ryland Computer Company is considering a plant expansion to enable the company to begin pr...

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Q: The following table gives the index number for different groups together with their respective weigh...

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Q: Suppose that two continuous random variables X and Y have joint probability density function fxy = A...

A: From the given information, Consider, Consider, EX=∫12xfxdx        =∫12x*0.009-e-3+2x+ex+19.0855ex...

Q: The density for the random variable X, the number of people per day who sought unnecessary treatment...

A: We have given that,  Let X be the random variable having probability mass function is,     X :      ...

Q: In which situation would a researcher need to use a one-way independent measures ANOVA to analyze th...

A: In situation b researcher need to use one-way independent measures ANOVA to analyse data. Here diffe...

Q: 1st Data Set: 5,4,1,6,5,5,6,5,6,6,15,5,6,13 (SD=3.54)

A: Given that data  Arrange the data in ascending order. 1,4,5,5,5,5,5,6,6,6,6,6,13,15 IQR = Q3 - Q1  

Q: A die is thrown at random. What is the expectation of the mumber on it ? 5 1 3 4 6. 1/6 116 1/6 1/6 ...

A: Given that  Probability mass function of X is  x 1 2 3 4 5 6 P(X=x) 1/6 1/6 1/6 1/6 1/6 1/6 ...

Q: followed from admission to the hospital until the end of the study.  The study population included 4...

A: Solution:-   ->In a recent study, investigators were interested in examining the association betw...

Q: Find the missing information in the following table : A в Combined Number 10 8 24 Mean 20 15 Geometr...

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Q: Suppose the following set of random numbers is being used to simulate the event of a basketball play...

A: Simulate the event of making four free throws in a row How numbers be rearranged ?

Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good b...

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Q: In an introductory statistics class of 50 students, there are 11 freshman, 19 sophomores, 14 juniors...

A: Given that , an introductory statistics class of 50 students, there are 11 freshman, 19 sophomores, ...

Q: Avery has a loyalty card good for a discount at her local pharmacy. The item she wants to buy is pri...

A: Given that  Avery has a loyalty card good for a discount at her local pharmacy. The item price befor...

Q: If 5% of the electric bulbs manufactured by a company are defective, use Poisson distribution to fin...

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Q: 4th Data Set: 2,1,2,4,3,7,5,8,5,6,2,1,14 So practice with these.

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Q: Interval Frequency The lives (in hours of continuous use) of 100 randomly selected flashlight batter...

A: We know that data. Mean = sum of all observations/total number of observations   

Q: Using the Weight Scoring technique, provide the weight scores for each car option. Which car should ...

A: Answer:   Total weighted score of car A= (0.3*3) + (0.5*6) + (0.2*4)   = 0.9 + 3 + .8 = 4.7   Total ...

Q: How would you use the normal distribution to find approximately the frequency of exactly 5 successes...

A: The objective is to find the frequency of exactly 5 success in 100 trials when probability of succes...

Q: Gun ownership. A friend claims that 33% or less Americans have a gun in their household. To test thi...

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Q: c) A card is drawn from a standard deck of cards. What is the probability of drawing Jack OR Queen? ...

A: Number of card in standard deck = 52 Number of Queen cards = 4 Number of Jack cards = 4

Q: Find the margin of error for the given values of​ c, σ​, and n.   c=0.90​, σ=3.5​, n= 81

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Q: Find the missing information in the following table : A B Combined Number 10 8 24 Mean 20 15 Geometr...

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Q: Table 2: Test Results Diabetic Not Diabetic Positive to urine test, negative to blood 7 3 Positive t...

A: Given information: Test Results Diabetic Not Diabetic Positive urine test, Negative to blood 7 ...

Q: 2.33 College smokers: At a university, 16% of students smoke. a) Calculate the expected number of sm...

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