The following data are given to an economist for the purpose of economic analysis. The data refers to the length of life of a certain type of batteries. n= 100, Σα = 50, Σ 1970, Σα- 2948 and Σα - 86,752. Here %3D d = X-48. %3D Do you think that the distribution is platykurtic?

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A: Solution-: We find, (c) Mean of the random variable (d) The standard deviation =?  (e) P(a parent in...

Q: d. to the right of Z is 79.95% i top e. between 0 and Z is 22.07 j. low

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Q: Consider the Venn diagram shown below. A B 4 5 12 3 |11 8 C 1

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A: We have given that Sample size (n) = 16Sample mean (x̅) = 116Standard deviations (s) = 9Significance...

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A: From the provided information, x 14.5 17.9 21.1 p (x) 0.2 0.5 0.3  

Q: The SAT and ACT college entrance exam are taken by thousands of students each year. The mathematics ...

A: Given,For SAT mathematics exam:mean(μS)=480standard deviation(σS)=100For ACT mathematics exam:mean(μ...

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A: At Walmart store, weekly demand for EPSON printers is normally distributed with mean 280 and SD 180....

Q: Use the data to the right to complete parts (a) through (d) below. Percentage Who Won't Try Don't Ap...

A: Given that; A data set is here  By using the formula of correlation coefficient (r)and regression co...

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Q: A new car that is a gas- and electric-powered hybrid has recently hit the market. The distance trave...

A: Given: μ=55σ=8              

Q: 14. Event A and Event B are dependent. 21 a) P(B)=-; p(A and B) = 00i ; P(B|A) = b) P(B|A) =; P(A an...

A: Given that  a)  P(B)=7/10 , P(A and B)=21/200  Find P(B/A)= ? b)  P(B/A)=7/40 , P(A and B)=7/200 Fin...

Q: recent year, a sample of the South American Redeye Piranha was collected by fishermen on a particula...

A: We have given that  Sample size n =60 Sample mean =12.88 99%confidence interval. (12.09,13.67)

Q: A box contains five slips of paper, marked $1, $1, $10, $25, and $25. The winner of a contest select...

A: A discrete random variable x is said to be having a probability distribution if it follows the follo...

Q: Q4) find the relation between x,y such that the point (x,y) is equidistant from the points * ?(7,1) ...

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Q: Exercise 4.2. The weights of bags of red gravel may be modeled by a normal distribution with a mean ...

A: Solution-: Given: μ=25.8kg,σ=0.5kg (a) P(a randomly selected bags of red gravel will weight between ...

Q: 1. The following are the ages of the first 10 female visitors at Kath's birthday 8 19 43 25 6 15 22 ...

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Q: If two coins are tossed,what is the probability obtaining at most one head?

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Q: There are eight female board members and twenty-two male board members. a. How many ways are there ...

A: Given : No. of female board members (F) = 8 No. of male board members (M) = 22 Total board members (...

Q: Q. 20. Find out mode from the following : Values X: 10 12 15 20 25 30 35 Frequency : 2 7 8 10 15 11 ...

A: Solution-: We have following table: X 10 12 15 20 25 30 35 Frequency 2 7 8 10 15 11 7 We fin...

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A: From the provided information,   More Less Total 7th grade 22 14 36 8th grad...

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Q: Q. 18. Calculate mode from the following 15 observations : 5, 4, 8, 7, 12, 18, 17, 30, 8, 12, 20, 12...

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Q: A marriage counselor has traditionally seen that the proportion p of all married couples for who...

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Q: Holding a variable constant is a technique for removing one threat to_ but it can limit the A. exter...

A: Here option D is correct. Holding a variable constant is technique for removing one threat to intern...

Q: Which statement is not consistent with the distribution of f ratios? F values that make up the f ra...

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Q: B. Complete the frequecy distribution table and find the measures of dispersion Class Interval Frequ...

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Q: H1: u > uo is an upper tailed hypothesis test True or False

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A: Given data, X Y X*Y X*X Y*Y 50 1200 60000 2500 1440000 60 1500 90000 3600 2250000 70 1600 1...

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Q: Suppose Y1, Y2, Y3, and Y4 are mutually independent and identically distributed exponential random v...

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A: From the given information we conduct Hypothesis test.

Q: Suppose portfolio mean return is 25% and standard deviation 30%. Find the 2 standard deviation range...

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Q: 2. What is the importance of getting the sample size?

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Q: Airline passengers arrive randomly and independently at the passenger- screening facility at Ottawa ...

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Q: 16. Two dice are rolled at the same time. What is the chance of getting... a) two even numbers b) a ...

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Q: ean of 19 days and a standard deviation of 4 days. Let X be the number o al. Round all answers to 4 ...

A: Given: x~N(μ=19,σ=4)

Q: Suppose that a population consists of the following elements: 8, 6, 11, 2, 3 from this population,...

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Q: (d) Calculate a point estimate of the proportion of all such beams whose flexural strength exceeds 1...

A: Given that  Data of flexural strengths of the (Mpa) for concrete beams. Total number of data values ...

Q: A population consist of the five numbers 2,3,6,8, and 11. Consider samples of size 2 that can be dra...

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Q: Compute Spearman's rank correlation for the following observation : Candidate 1 2 : 3 4 5 6. 7 8 Jud...

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Q: Determine the value of z* such that it satisfies the conditions below. (Round your answer to two dec...

A: We have to find z* such that it satisfies the condition below 

Q: Example 5. From the following data construct the index number for the year 2004 on the basi of 2003....

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