Private nonprofit four-year colleges charge, on average, $27,228 per year in tuition and fees. The standard deviation is $7,425. Assume the distribution is normal. Let X be the cost for a randomly selected college. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N(,) b. Find the probability that a randomly selected Private nonprofit four-year college will cost less than 27,779 per year.  c. Find the 70th percentile for this distribution. $ (Round to the nearest dollar.)

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A:

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A: Given data: An economics professor decides to curve the grades of his class. In doing so, he decides…

Q: Private nonprofit four-year colleges charge, on average, $27,449 per year in tuition and fees. The…

A: given data  μ = 27449σ = 7255 normal distribution

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Q: Private nonprofit four-year colleges charge, on average, $27,845 per year in tuition and fees. The…

A: Given mean= 27845  Standard deviation = 6534  So, variance= 65342=42693156   Answer(a):…

Q: Private nonprofit four-year colleges charge, on average, $27,449 per year in tuition and fees. The…

A:

Q: Private nonprofit four-year colleges charge, on average, $26,244 per year in tuition and fees. The…

A: Provided information is, private nonprofit four year college charge, on average $26244 per year in…

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A: Given that, Private nonprofit four-year colleges charge, on average, $26,329 per year in tuition and…

Q: Private nonprofit four-year colleges charge, on average, $27,442 per year in tuition and fees. The…

A: The given data is, µ=$27,442 and standard deviation σ=$6,877. X: The cost of a randomly selected…

Q: Round all answers to 4 decimal places where possible. Let X Be the cost for a randomly selected…

A: Given Data Population Mean,μ = 27552 Population Standard Deviation,σ = 7325 X…

Q: Financial analysts who make forecasts of stock prices are categorized as either​ "buy-side" analysts…

A: Given data:   ​Buy-Side Analysts (X) ​Sell-Side Analysts (Y) Mean μx=0.84 μy=−0.06 Standard…

Q: Suppose that a category of world class runners are known to run a marathon (26 miles) in an average…

A: X¯ ~ N(μx¯ , σx¯) μx¯=μ=142 σx¯=σn=1349=1.86 N = Normal distribution

Q: Private nonprofit four-year colleges charge, on average, $27,175 per year in tuition and fees. The…

A: The distribution of x is obtained as X~(27,175, 46,389,721), from the calculation given below:

Q: Private nonprofit four-year colleges charge, on average, $26,059 per year in tuition and fees. The…

A: Given Mean=26059 Standard deviations=7129

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A:

Q: A frequency distribution has a mean of 100 and a standard deviation of 20. The class limits for one…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 20 The class limits for one…

Q: 9. Assume that the heights of a population of adults form a normal distribution with a mean p =69…

A: Solution: Question 9 Given information: n= 25 Sample size μ=69  inches  Population standard…

Q: Private nonprofit four-year colleges charge, on average, $26,741 per year in tuition and fees. The…

A: Followings are the Explanation of the question a) Let X be the cost for a randomly selected college…

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A: From the given information,X follows a normal distribution with a mean of 311 miles and standard…

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Q: Suppose the distributions of arrival and service times were normal instead of exponential.  Let the…

A: The objective of this question is to estimate the long-run average number of people that would be in…

Q: Private nonprofit four-year colleges charge, on average, $27,915 per year in tuition and fees. The…

A: It is given that the distribution is normal. The mean is $27,915 and the standard deviation is…

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A: Given information Population mean µ = 100 Standard deviation σ = 20 We have to find the probability…

Q: selected college. Round all answers to 4 decimal places where possible. a. What is the distribution…

A: Given Data Population Mean,μ = 27503.0 Population Standard Deviation,σ = 6757.0

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Q: On average, indoor cats live to 12 years old with a standard deviation of 2.4 years. Suppose that…

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Q: The average American man consumes 9.9 grams of sodium each day. Suppose that the sodium consumption…

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Q: a. What is the distribution of X? X - N( b. Find the probability that a randomly selected person…

A: Given, Mean =μ = 12Standard Deviation =σ = 5

Q: Private nonprofit four-year colleges charge, on average, $26,340 per year in tuition and fees. The…

A: Given: Mean, μ=26340 Standard deviation, σ=7250 X be the cost for a randomly selected college. The…

Q: Private nonprofit four-year colleges charge, on average, $27,088 per year in tuition and fees. The…

A: a) Consider a random variable X that defines the cost for a randomly selected college.

Q: Assume that thermometer readings are normally distributed with a mean of 0degrees°C and a standard…

A: The standard normal variable Z is defined as, Z = (X – µ)/σ, where µ is the mean of the random…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

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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.