c. What is the probability that one randomly selected city's waterway will have less than 9.2 ppm pollutants? d. For the 36 cities, find the probability that the average amount of pollutants is less than 9.2 ppm. e. For part d), is the assumption that the distribution is normal necessary? O NoO Yes

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Q: 8. Assume that the total score (from both teams) for college football games averages µ = 42 points…

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Q: Can the following table be a probability distribution? xx P(x)P(x) 1 0.3023 2 0.2852 3 0.1992 4…

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Q: The probability distribution is as follow: x 0 1 2 3 p(x) 0.25 0.40 0.20 0.15 what is the…

A: It is given that P(x=0)=0.25.

Q: A test was given to a group of students. The grades and gender are summarized below A В C Total Male…

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Q: a. What is the probability that the mean price for a sample of 30 federal income tax retums is…

A: here given , mean  = 273  standard deviation  = 100 here use excel command for probability from…

Q: b. Assuming their scores are independent, what is the probability that Mr. Cull scores more than 50…

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Q: 4.42 For a mound-shaped, symmetric distribution, what is the probability that x falls into the…

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Q: The following contingency table gives the results of a sample survey of South African male and…

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Q: A recent survey reported that 50​% of​ 18- to​ 29-year-olds in a certain country own tablets. Using…

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Q: A recent survey reported that 44​% of​ 18- to​ 29-year-olds in a certain country own tablets. Using…

A: It is given that n = 6 and p = 0.44.

Q: From a certain provincial bus station, it will take a passenger between zero to fifteen minutes to…

A:

Q: (b) What is the probability that a randomly selected typist's speed is less than 64 wpm? 0.4751

A: b) It is given that the mean is 64 and the standard deviation is 16.

Q: Consider the data, in the following table, recorded over a month with 30 days: On each day I…

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A:

Q: i) State, with parameter(s), the probability distribution of the statistic, T = Σ=Wi?

A: It is given that Zi and Wi follows Standard Normal distribution i.e N(0,1).

Q: 11. Consider the following dartboard where all quadrilaterals are squares and the r's represent…

A:

Q: a. Given a random sample of 70 resistors, what is the probability that its mean is between 218 N and…

A: HERE GIVEN, mean = 220 standard deviation = 11   here use central limit theorem

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Q: What is the value of c, a value from the t distribution for a sample of size 26, such that the…

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Q: Refer to the Venn diagram to the right for events A and B in an equally likely sample space S. Find…

A: Given,

Q: A, you find d deviation - hours wor probability many peop. orobability ne)? How m

A: The probability that a person will work more than 60 hours is given by P(X>60) =P(X-uσ>60-uσ)…

Q: An airline knows from experiences that the distribution of the number of suitcases that get lost…

A: Let "X" be the number of suitcases that get lost each week on a certain route.

Q: An airline knows from experience that the distribution of the number of suitcases that get lost each…

A:

Q: Use the central limit theorem (CLT) to determine the probability ? that the mean taxable wages in…

A: From the provided information, Mean (µ) = 28.29 Standard deviation (σ) = 33.493 X~N (28.29, 33.493)…

Q: (a) From the following Venn diagram, which indicates the number of outcomes of an experiment onding…

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Q: A recent survey reported that 50​% of​ 18- to​ 29-year-olds in a certain country own tablets. Using…

A: Let P probability of 18-29-year-old in a certain country own tablets P=0.5 N=6 = sample size

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A: Given Information: Confidence level = 0.98 Significance level α=1-0.98=0.02 Margin of Error E=3…

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Q: A citrus farmer has observed the following distribution for the number of oranges per tree. How many…

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Q: a. What is the probability that is within $500 of the population mean if a sample of size 60 is used…

A: here given , for population mean = 71300 standard deviation  = 5000   here sample size used in both…

Q: Use Baye’s Theorem to calculate the probability that a randomly selected car is new, given that it…

A:

Q: (b) If a sample of 10 cups of ice cream is selected, what is the probability that the mean of the…

A: Given that :  x¯ = 670σ=35n=10μx¯ =660

Q: The speed of airliners flying at cruise altitude is normally distributed with a u=522.0 miles/hour…

A:

Q: A test was given to a group of students. The grades and gender are summarized below C Total Male 16…

A: Let Gender = X and Grades = Y Given data        Grades Y         A B C f(X)   Male 16 13 14…

Q: Given the following data for an imaginary superhero universe: Flying Telepathy Super…

A:

Q: For a randomly selected adult in the United States, let X represent the number of his/her…

A: List of formulae : 1) Expected value :  μ = ∑xP(X)  2) Standard deviation : σ = ∑(x-μ)2P(x)

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.