ustration l7.15. If tw0 normal universes A and B have the same total frequencies, but the a of the universe A is x time that of the universe B, show that the maximum frequency of universe A is 1/x that of universe B.

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Q: Suppose that about 82% of graduating students attend their graduation. A group of 22 students is ran...

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Q: We have a distribution with a mean of ? = 35 and ? = 3.5. Find the raw score equivalents for the fol...

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A: Mean(µ) = 35000 Standard deviations (σ) = 2100 X ~ N (µ, σ )= N ( 35000, 2100)  

Q: average height of a giraffe in 10.3 feet with a standard deviation of 2.5 feet. If you were to selec...

A: We have given that  Sample size n = 50 Population mean =10.3 Population standard deviation = 2.5  

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Q: Explain what is the LM test and demonstrate it

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Q: What is the probability that neither battery is defective? 2/15; b. 7/15; c. 5/15; d. 8/15; e. 13/15...

A: It ia given that Number of defective batteries = 4 Total batteries = 10 Sample size = 2

Q: kindly assist,   An epidemiologist who is working in Capricorn Department of Health investigated t...

A: We have given that  Sample size n =10000 Favorable cases x =275 Sample proportion p^=x/n  =275/10000...

Q: 2. Considerthe following data representing the life in hours of incandescent bulbs. 1,067 919 1,196 ...

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Q: (a) Find the expectation E (X) of X. E (x) = | %3D (b) Find the variance Var(X) of X.

A: The E(X) is defined as E(X) = ∑x.P(X = x) And variance of X is  V(X) = E(X2) - (E(X))2

Q: (b) Applying the MSE measure of forecast accuracy, would you prefer a smoothing constant of a = 0.1 ...

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Q: 15.22. Given x = 79, y = 56, o̟ = 4, 0, = 3 and r (x, y) = + 0.2, find thẻ range of values of x when...

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Q: Consider the experiment of two dice are drawn. Let  X be a random variable representing the differen...

A: Given: Two dice are thrown  Let X be a random variable that represents the difference of the number ...

Q: 3. The critical boundary for a hypothesis test was ±1.96. The z-score was +2.02. What should the res...

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Q: 5. A list of numbers consists of: 13, 9, 11, 7, and 10. 9ldon (a) Find the average and the SD of thi...

A: Given list is: 13 , 9 , 11 , 7 and 10 We need to find certain questions. 

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Q: Express the confidence interval 17.1%±3.7%17.1%±3.7% in the form of a trilinear inequality. % <p<<p...

A: Given confidence interval is 17.1% ± 3.7%

Q: (a) Find the expectation E (X) of X. E (x) = 0 %3D (b) Find the variance Var(X) of X.

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A: Given: Subject age, X Glucose level, Y 33 99 28 67 25 78 43 75 57 88 59 91

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Q: Compute the Coefficients of Variation for each sample

A: Here AS per policy I have calculated first 3 subparts kindly REPOST for remaining 

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Q: age pioy Table 2.10(d) Wages Frequency $250.00–$259.99 8 260.00–269.99 10 270.00–279.99 16 280.00–28...

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A: According to the given information in this question  We know that   p^=xn where  n = 32 and  x = 22

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Q: IT firm HelpTech offers technical support for corporate clients across the country. The number of bi...

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Q: A community epidemiology study conducted fasting blood tests on a large community a obtained the fol...

A: It is given the mean and standard deviation of males are 100 and 30.

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Q: bỹ a group of 12 students in two examinations A and B. Calculate The following table gives 'the mark...

A: The correlation coefficient is used to measure the linear relation between two variables. The correl...

Q: Making use of the data summarised below calcu- late the coefficient of correlation. Case 1 2 3 4 5 6...

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Q: Find " E(2X-1)" Find the variance of X and Var(2x-1)

A: Here total outcomes by rolling 2 dice =6×6 = 36 Here X =  difference of the number on the face of th...

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A: Given Information: The data represents the number of billed hours in the past 4 years. The objective...

Q: 3. An agricultural research organization tested a particular chemical fertilizer to try to find out ...

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Q: With a view to study whether the working condition in a factory had any influence on the frequency o...

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Q: Difference of means = 0 Null hypothesis: Alternative hypothesis: Difference of means Sample Mean Std...

A: We have given that Null hypothesis : difference of means =  Alternative hypothesis : difference of m...

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Q: The average length of a phone call for cell phone users in the United States is 8.4 minutes, with st...

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Q: A normal distribution is given with population mean 141 and population standard deviation of 65. Fin...

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Q: Consider a population consisting the scores of 8 students in a Statistic test. 18, 22. 25, 28, 32, 3...

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Q: Construct the probability distribution of X. b) What is the expected gain from buying one ticket? Is...

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Q: Suppose the national unemployment rate is 3.5%. In a survey of n = 450 people in a rural Wisconsin c...

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Q: GIVEN X f Xm<ef 35 -416 42 - 485 49 - 55 12 56 - 62 10 63 - 69 12 70 - 767 77 - 835 84 - 903 i = n =...

A: INTRODUCTION:  Quartiles divide the whole distribution into four equal parts. First Quartile Second...

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A: Mean and standard deviation calculations:-     Hypothesis Test:-      

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Q: From the following regression equations : 3X- 2Y- 10 = 0 and 24X-25Y+ 145 = 0, Find means of X and Y...

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