2. If x is a value assumed by a random variable X having the exponential distribution given by x > 0, elsewhere f(x) = 0 >0 0 0, Find k so that the interval 0 <0

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A: The table shows discrete random variable values with their probability values.

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A: Mean = 70Standard deviation = 5Diane's n = 3Jack n = 40

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A: Sample size : n = 41Sample mean : Sample standard deviation : s = 9.498% confidence interval for .

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A:

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A: Answer Given…

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A: n=60Mean=130Standard deviation=17.80

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A: According to the range rule of thumb  not significant (unusual) values are values that are more than…

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A: We know that in standard normal  distribution Z ~ N(0, 1). That is, mean, μ = 0 and standard…

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A: Property…

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A: Solution:-given that mean =14 and sd =0.4To find the probabilities, we'll use the properties of the…

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A: Gross Revenue($1000s)TV Advertising($1000)NV…

Q: 2) What can be said about the correlation coefficient r of æ and y where y = x² +8x + 16, x takes…

A: 2.To find the correlation coefficient (r) between x and y, where y = x^2 + 8x + 16, and x takes the…

Q: Please no written by hand and no emage A simple random sample of 5 months of sales data provided…

A: Month:12345Units Sold:94110899493Number of observations, n = 5.

Q: Let X1, X2,..., Xn be a random sample from a Beta distribution with the pdf f(x; a) = axa-1 for 0< x…

A:

Q: Use the formula to find the standard error of the distribution of differences in sample means, X₁ -…

A: Population 1:Population 2:

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A: The diagrams provided in the questions are bar diagrams. These are known as vertical bar diagrams.

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Q: What condition allows us to say that the value in part (1.2) is approximately true?

A: Let X be the random variable that the cholesterol level in men.Given that,Sample size To find the…

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A: It is given asMargin of error, E = 2% = 0.02Confidence level = 95%

Q: Consider the data set  {-14.14,11.3,-6.2,8.6,8.6,-5.8,-6.2-12.1} find the average and median

A: Given data set {-14.14,11.3,-6.2,8.6,8.6,-5.8,-6.2,-12.1}Arrange the data in ascending order:…

Q: Method Total ways to count? # successful outcomes? Probability? combination

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A: Here dependent variable (y) is the employee's attitude and the independent variable (x) is job…

Q: Only Spouse #1 Works Only Spouse #2 Works Both Spouses Work Total 0 children 768 172 94 522 353 1…

A: 0 children1 child2 or more childrenTotalOnly spouse #1works17279174425Only spouse #2…

Q: Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X)…

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Q: Which type of statistic would be appropriate for analyzing a within-subjects research design?

A: It is required to identify the most suitable type of statistic for analyzing a within-subjects…

Q: A report states that the cost of repairing a hybrid vehicle is falling even while typical repairs on…

A: Given Sample mean=$3780Sample size=100S=Sample standard deviation=$600

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A: Sample size, Number of adults who donated blood in the past 2 years,

Q: We consider the differences between the reading and writing scores of a random sample of 200…

A: The sample size is 200, the mean is -0.531 and the standard deviation is 8.858.

Q: A popular Italian eatery has had a dispute among the wait staff regarding the amount of tips waiters…

A: Lunch:Sample size Sample mean Sample standard deviation Dinner:Sample size Sample mean Sample…

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Q: n₁=16,112=13 X₁ =5.6₁ X₂ = 7.4 5₁ = 3.2, 5₂=4.9 : (M₁-M₂) TO H₂ = (0₁₁ - M₂) #0 α=0.10 Ho a) 90%…

A: There are two independent samples which are assumed to be sample 1 and sample 2.We have to construct…

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A: Population mean is The objective is to determine the claim of given hypothesis test.

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Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…

A: Before treatment 20 subjects had a mean wake time of 101.0 minAfter treatment, the 20 subjects had a…

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: n=910X=502

Q: The variance function will be OV(Y|X) = 0² O Bo + B₁ X + 0² O None of the other answers O V(Y|X) =…

A: It is given as the simple linear regression model Y = β0 + β1X + e,   e ~iid N( 0, σ2 ),  i = 1, 2,…

Q: Given the frequency table below, what is the relative frequency of the data value 7?…

A: ValueFrequency47566473

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Q: If all other quantities remain the same, how does the indicated change affect the width of a…

A: The confidence interval for population mean is  given by  x̅  ±  Zα/2*(σ/√n)Where,x̅ = sample mean…