(a) Approximately what percentage of these vehicle speeds were between 28 and 60 mph? approximately  % (b) Approximately what percentage of these vehicle speeds exceeded 60 mph? (Round your answer to the nearest whole number.) approximately

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A:

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A: Solution: 1. Let X be the height of children in a second grade section. From the given information,…

Q: (a) Approximately what percentage of these vehicle speeds were between 31 and 57 mph? approximately…

A:

Q: QUESTION 8 A psychology professor is interested in collecting data on how many hours students study…

A: Since you have asked multiple question, we will solve the one question for you. If you want any…

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Q: In a study investigating the effect of car speed on accident severity, 5,000 reports of fatal…

A:

Q: Question 7 The Acme Company manufactures widgets. The distribution of widget weights is…

A: Given that ; Mean = 42 ounce Sigma = 6 ounces  By using standard normal distribution we get answer.

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A: GivenMean(μ)=175standard deviation(σ)=15

Q: In a study investigating the effect of car speed on accident severity, 5,000 reports of fatal…

A:

Q: In a study investigating the effect of car speed on accident severity, 5,000 reports of fatal…

A: Given n = 5000, μ=43 and σ=17 Using standard normal, Z=X-μσ ~ N(0,1)…

Q: he mean value of land and buildings per acre from a sample of farms is $1400​, with a standard…

A: Given that  The mean value of land and buildings per acre from a sample of farms is $1400​ = μ =…

Q: What was the range (best approximation) in which at least 75% of the data values fell?

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A: From the provided information, Mean (µ) = $1700 Standard deviation (σ) =$200 1) The usual range…

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A:

Q: What was the range (best approximation) in which at least 75% of the data values fell?

A: 1975 a sample of the hourly wages of employees who work in restaurants in Los Angeles has a mean of…

Q: The mean value of land and buildings per acre from a sample of farms is $1500, with a standard…

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Q: The mean value of land and buildings per acre from a sample of farms is $1700, with a standard…

A: Answer:- Given data values are, 1803 , 1970 , 1571 , 1388 , 1699 , 1557 Sample mean, X¯=1700…

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A: Let X be the eye height of the women following normal distribution  .

Q: The mean value of land and buildings per acre from a sample of farms is $1400, with a standard…

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Q: In a study investigating the effect of car speed on accident severity, 5,000 reports of fatal…

A: Solution

Q: A quantitative data set has size 50. At least how many observations lie within three standard…

A: The size of the data set is 50.

Q: The mean value of land and buildings per acre from a sample of farms is $1600, with a standard…

A: Given Mean=1600 Standard deviations=300

Q: The mean value of land and buildings per acre from a sample of farms is $1600, with a standard…

A: The mean is 1600 and the standard deviation is 100.

Q: "he mean value of land and buildings per acre from a sample of farms is $1400, with a standard…

A:

Q: e mean value of land and buildings per acre from a sample of farms is $1300, with a standard…

A:

Q: In a study investigating the effect of car speed on accident severity, 5,000 reports of fatal…

A:

Q: a study investigating the effect of car speed on accident severity, 5,000 reports of fatal…

A: The average speed is 42 with standard deviation 12mph. μ=42σ=12

Q: Question 8: A 1991 survey of 1984 graduates of different colleges in the East of the U.S.,…

A: Solution

Q: In a study investigating the effect of car speed on accident severity, 5000 reports of fatal…

A: Given,Mean, μ = 45Standard deviation, σ = 14Let X be a random variable represents the vehicle speed…