In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a mean of inches 68.9 and a standard deviation of 3.0 inches. A study participant is randomly selected.  If there are 500 men, how may would you expect to be taller than 71 inches? Write a complete sentence to explain your answer?

Q: In a multiple-choice examination in Chemistry, students Mae and Julie received scores of 82 and 65,…

A: We have given that.   X~N( μ , ?^2 )   μ = , ? =   Z-score =( x - μ )/?

Q: A marketing researcher for a phone company surveys 70 people and finds that the proportion of…

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A:

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A: Given n=54 X-bar=3912 Standard deviations=615

Q: Find the mean and standard deviation for the numbers of sleepwalkers in groups of five.

A: Given: X P(x) 0 0.175 1 0.357 2 0.318 3 0.118 4 0.028 5 0.004

Q: A quiz consists of 20 true or false questions. If the student guesses on each question what is the…

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Q: In 1955, Life Magazine reported that the 27 year-old mother of three worked, on average, an 75 hour…

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Q: 95% of 80 freshman history students scored between 70% and 80% on a take home quiz. If this data is…

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Q: Statewide, the average score on the verbal portion of the college entrance exam is 453, with a…

A: From the provided information, Sample size (n) = 137 Sample mean (x̅) = 502 Population standard…

Q: Mary Bartel, an auditor for a large credit card company, knows that, on average, the monthly balance…

A: The standard deviation is 56. Mary audits 50 accounts. That is n=50

Q: What is the standard deviation for the following sample of scores? Scores: 3,2,4,6,6,3

A: The standard deviation is a measure of dispersion. It tells how much data are deviates from their…

Q: In a random sample of 48 people, the mean body mass index (BMI) was 28.3 and the standard deviation…

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Q: a. If PO1 Dela Cruz's waist girth is 32, how many standard deviations away is he from the mean? b.…

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

Q: For a population with a mean of μ = 55 and a standard deviation of σ = 69, what is the standard…

A: Answer - For a population with a mean of μ = 55 and a standard deviation of σ = 69,             what…

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Q: In 1955, Life Magazine reported that the 25 year-old mother of three worked, on average, an 80hour…

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Q: The Virginia Cooperative Extension reports that the mean weight of yearling Angus steers is 1152…

A: Here mean = 1152 and SD = 84. z=(x-mean)/SD = (x-1152)/84

Q: The heights of adult men in America are normally distributed, with a mean of 69.2 inches and a…

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A:

Q: If a sample has a mean of 48 and a standard deviation of 3.2, what is the value in the set that…

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Q: In a study of Ridge View's boys' basketball team, the average height is 68 inches and standard…

A: Given, mean =μ=68Standard deviation = 4x = 78

Q: Given that the mean weight of senior high school students is 65kg with a standard deviation of 10kg.…

A:

Q: Toby's Trucking Company determined that on an annual basis, the distance traveled per truck is…

A: It is given that the mean and standard deviation are 50,000 and 12,000, respectively.

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Q: The population standard deviation for the height of high school basketball players is three inches.…

A: Solution: 6. From the given information, confidence level is 0.95, σ=3 inches and E=1.

Q: According to the IRS, the average refund in the 2011 tax year was $3,109. Assuming that the standard…

A: Given information- Sample size (n) = 50 Population Mean µ = $3,109 Standard deviation (σ) = $874

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A: Introduction: Consider X as a normally distributed random variable, with mean μ and standard…

Q: in a group of 230 tests, how many students score within one standard deviation of the mean?

A: The probability that the students score within one standard deviation of the mean will be:…

Q: If the average salary of a computer programmer is $71, 800 with a standard deviation of 13, 000,…

A: I am attaching image so that you understand each and every step.

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A:

Q: A travel agency wishes to estimate, at 99% confidence and to within $100, the mean airfare for…

A: According to the given information, we have Standard deviation = $275 Margin of error = $100…

Q: The distance traveled by a commuter in the city, has a mean of 28 miles and a standard deviation of…

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Q: What is the z-score of a value of 27, given a set mean of 24, and a standard deviation of 2?

A:

Q: For a sample of 120 businesses, the average profit they generate in a month is $54,000 with a…

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Q: Statewide, the population as a whole watches 6.2 hours of TV per day. A random sample of 1017 senior…

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Q: If the mean is two, and the standard deviation is one, would a value of five be considered…

A: Unusual values : Unusual values should be lie outside the 2 standard deviation from the mean.   i.e.…

Q: The sample standard deviation is a measure of what?

A: The sample standard deviation is a measure of spread of scores within a sample data.

Q: If the mean speed for a major league fast ball is 90 miles per hour and the standard deviation is 5…

A: Given Information: Mean = 90  Standard deviation = 5 Standardized score for a pitch that is 97 miles…

Q: For a population with a mean of μ = 55 and a standard deviation of σ = 17, what is the standard…

A: We have to find correct answer..

Q: A city took a survey of 1,550 households to find out how many televisions each owned. The mean was…

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Q: The average speed of 64 random cars traveling on a certain highway was 80 km/h and the sample…

A: We have given that,  Average speed (x̄) = 80 , standard deviation    (s) = 20, Confidence level(C.I)…

Q: Would it be reasonable to use the standard deviation formula?

A: here  According to a gallup survey of boys 77% of boys had played computer games in the past week…

Q: In a study of Ridge View's boys' basketball team, the average height is 68 inches and standard…

A: Given that, In a study of Ridge view's boys' basketball team, the average height is 68 inches and…

Q: Assuming the sample mean and standard deviation are indicative of the class as a whole, in what…

A:

Q: On an Intelligence Quotient test with a mean score of 100 and a standard deviation of 15, Patrick…

A: The mean is μ=100 and standard deviation is σ=15. The score is x=85 so it follows:…

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.