Suppose that the contagious period of COVID-20 has an average of 7 days, and follows a chi-square distribution.  Let X measure the contagious period for a randomly selected specimen of the COVID-20 virus. State the distribution of the random variable X. Group of answer choices X∼χ2(6) X∼Student′st(7) X∼χ2(7) X∼Continuous(7)     A friend of yours has COVID-20 and the doctors have told her that she has had it for 10 days.  Compute the probability that they are still contagious.  (I.E. compute the probability that X is greater than or equal to 10 days.)

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A: According to the central limit theorem, when a sample a sufficiently large sample (size >= 30) is…

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A: Ripped:Sample size Sample mean Sample variance Gainz:Sample size Sample mean Sample variance…

Q: However, when they showed their data to a statistics professor, the professor pointed out that…

A: The correct tool for this study would be 2-sample mean (matched pairs) test.

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A: From the given information, It is given that the different samples are taken by you and your friend…

Q: A sample of n=16 is selected from a population = 100 and σ= 32. If the sample mean is 127, what is…

A: z-score for sample mean: From the given information,   n=16 µ=100 σ=32 x-bar=127   Therefore,

Q: If a variable of two populations has only two possible values, the chi-square homogeneity test is…

A:

Q: A random sample of n1 = 12 winter days in Denver gave a sample mean pollution index x1 = 43.…

A: A random sample of n1 = 12 winter days in Denver gave a sample mean pollution index x¯1 = 43.…

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A:

Q: A random sample of n1 = 14 winter days in Denver gave a sample mean pollution index x1 = 43.…

A: We have given that  Sample sizes n1=14   , n2= 10  Sample means xbar1=43, xbar2=35  And standard…

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A: Linear regression equation is given by,   Here sample size is n= 6

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A: Variance formula is:

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Q: Suppose that the probability that a patient admitted in a hospital is diagnosed with a certain type…

A:

Q: A study of parental empathy for sensitivity cues and baby temperament (higher scores mean more…

A: Solution: Given information: n1= 34 Sample size of mothern2= 40 Sample size of fatherx1= 69.04…

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A: We have given that,  The data set is,  337, 406, 747, 406, 406, 337, 337 Then,  We will find the…

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A: A hypothesis is used to test whether to reject or accept null hypothesis.

Q: second type by at most 9. Should they use the first type or not? (Assume a=0.1)

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Q: Carboxyhemoglobin is formed when hemoglobin is exposed to carbon monoxide. Heavy smokers tend to…

A: Part a: From the given data we have:   S.No. X x-xbar 1 9.1 2.1025 2 9.8 0.5625 3 10.6…

Q: For items 25 to 26: A farmer has decided to use a new additive to grow his crops. He divided his…

A: Given Information: Plot 1 2 3 4 5 6 7 8 9 10   Before 9 9 8 7 6 8 5 9 10 11 After 10 9 9 8 7…

Q: Consider two independent random variables X and Y with Means of 17 for the first variable is 1 and…

A: Let the new variable be Z  = 3X  - 4Y   The mean is given by E(Z) =3E(X) - 4E(Y) E(Z) = 3(17) -…

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A: We have to conduct right tailed test for proportion.

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A: The question is about discrete probability distribution.Given :Each slip has number from 1-5 written…

Q: population has = 60 and  = 10.  Find the z-score corresponding to each of the following sample…

A:

Q: Suppose that X is a random variable with mean 30 and standard deviation 4. Y is a random variable…

A: Given E(X)=30, sd(X)=4  E(Y)=50 , sd(Y)=8  correlation (X,Y)=0 1) Z= 35-10X 2) Z= X+Y 3) Z= -2X - 2Y…

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A: From the provided information, Level of significance (α) = 0.05 The p value = 0.02

Q: There are two independent random variables X and Y. X has mean 4 and standard deviation , and Y also…

A: Given  E(X)=mean of X=4 and E(Y)=mean of Y=4  X and Y are independent