The honors program at Brad's university only accepts students with an entrance exam score over 400. What percentage of students would be eligible if the students at Brad's school have an average exam score of 250, with a standard deviation of 80?

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Q: A mandatory competency test for high school sophomores has a normal distribution with a mean of 400…

A: Given data Mean = 400 Standard deviation = 100 To find the top 3%, we need to find the z-value…

Q: The average 20- to 29-year-old man is 69.6 inches tall, with a standard deviation of 3.0 inches,…

A:

Q: In a sample of 152 people the average score was 74 with a standard deviation of 6. What is the…

A: Sample size = n = 152   Mean = 74  Standard deviation = 6

Q: Raul received a score of 77 on a history test for which the class mean was 70 with a standard…

A: for history test:mean(μh)=70standard deviation(σh)=4and xh=77For biology test:mean(μb)=70standard…

Q: he sample mean for a recent introductory psychology test was 78, and the standard deviation was 3.…

A: Given Information: Mean = 78 Standard deviation = 3 Student received a score of 82 i.e., X = 82…

Q: An advertising agency has stated that 20% of all television viewers watch a particular program. How…

A: From the provided information, An advertising agency has stated that 20% of all television viewers…

Q: statistics professor reported that the mean score in a recent quiz is 72 and the standard deviation…

A: Solution

Q: A test has a mean of 140 and a standard deviation of 27. What proportion of people have scores…

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Q: The results of a common standardized test used in psychology research is designed so that the…

A:

Q: If a distribution has a mean of 50 and a standard deviation of 5, what value would be -1 standard…

A: Given, μ=50σ=5z=-1x=?

Q: The admission committee of AUCA passes 61% of those who took the exam. If the scores follow a normal…

A: We have given that.   X~N( μ , ?^2 )   μ =350 , ? =25   Z-score =( x - μ )/?

Q: rcentage of fake followers was 13.3 with a standard deviation of 2.

A: Given, sample size (n) =53sample mean (x̄) = 13.3sample standard deviation (s1) = 9.8 Confidence…

Q: The lengths of human pregnancies are normally distributed with a mean of 268 days, and a standard…

A: Given that, X~N(268,152) n=10

Q: Among 157 African-American men, the mean systolic blood pressure was 146 mm Hg with a standard…

A: From the provided information, Sample size (n) = 157 Sample mean (x̅) = 146 mm Sample standard…

Q: The average salary of bank managers in a certain city is $85,600 pesos per hour with a standard…

A: GivenMean(μ)=85600standard deviation(σ)=22400

Q: A person must score in the upper 2% of the population on an IQ test to qualify for membership in…

A:

Q: .A person must score in the upper 2% of the population on an IQ test to qualify for membership in…

A: As per the guidelines we are allowed to solve maximum of 1 question. If you need help with other…

Q: A particular leg bone for dinosaur fossils has a mean length of 5 feet with a standard deviation of…

A: Given, A particular leg bone for dinosaur fossils has a mean length of 5 feet with a standard…

Q: The heights of adult men in America are normally distributed, with a mean of 69.3 inches and a…

A: Let "x" be the height of women

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Q: A large number of applicants for admission to graduate study in business are given an aptitude test.…

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Q: Nationally, the per capita monthly fuel oil bill is $110. A random sample of 36 cities in the…

A: Let μ denotes the population mean per capita monthly fuel oil bill. The national per capita monthly…

Q: The combined math and verbal scores for students taking a national standardized examination for…

A: μ = 800 σ = 190

Q: The mean score on the SAT in 2017 was 1060, and the standard deviation was 195. Assume the scores…

A: Given,  Mean μ=1060  Standard deviation σ=195Let x be score of a randomly selected person

Q: Suppose the exam average in a class is 72% with a standard deviation of 3. What proportion of…

A: Given data: Average score = 72 % Standard deviation  = 3% To find: What proportion of students…

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: due to the increasing price of apartments each year, houston chronicle reported that rent of 1 bed 1…

A: Given that  μ=1200σ=500n=20 Consider, the probability that the price is more than 1100 is,…

Q: A recently admitted class of graduate students at a large state university has a mean GRE verbal…

A: We have given that  Mean=650  Standard deviation=50 X=490

Q: In a recent survey, 80% of the community favored building a police substation in their neighborhood.…

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Q: A recent study found that 69% of all adults over 50 wear sunglasses for driving. In a random sample…

A: Formula : Mean = np Standard Deviation  :

Q: The mean height of a population of men is 70.8 inches and the standard deviation is 3.2 inches. What…

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Q: The scores on a university examination are normally distributed with a mean of 70 and a standard…

A: The scores of a university are normally distributed with mean 70 and s standard deviation 10.Given…

Q: The results of a common standardized test used in psychology research is designed so that the…

A: Given Information: Population mean (u) = 165  Standard deviation (σ) = 10  Score earned by a subject…

Q: A published study says that 95 percent of American children are vaccinated against measles, with a…

A: A t-test is used to determine the test if there is any significance difference between two mean…

Q: A maths class has 100 members. If there is a 15% absentee rate per class meeting , find the standard…

A:

Q: The heights of adult men in America are normally distributed, with a mean of 69.1 inches and a…

A: Heights of adult men is Normally Distributed with mean 69.1 inches and standard deviation 2.68…

Q: if an average score of exams was 74 points for 24 students  the 25th student got 64 points whats…

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Q: The local police force gives all applicants an entrance exam and accepts only those applicants who…

A: The score that corresponds to the top 15% is, The Z-score that corresponds to the area 0.85 is…

Q: according to police sources, a car with a certain protection system will be recovered 90% of the…

A: Given problem is a binomial distribution with:

Q: My Physics professor announced that top 18% will get A in the class.               Class mean is 72,…

A: Let X= score of a student  Given that X follows a normal distribution with mean=72 and standard…

Q: What is the z-score if our standard deviation was 2, mean of 49 and our specific observation is 47?

A: Given: Standard deviation = 2 Mean= 49 Specific observation =47 Determine the Z- score using the…

Q: A history class has 75 members.  If there is a 12% absentee rate per class meeting , find the…

A: Given data  P(absent) = p = 0.12  So q= 1-p = 0.88 Sample size (n)= 75 X = no.  of student absent We…

Q: The admission committee of AUCA enrolls 39% of those who took the exam. If the scores follow a…

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Q: The average 20-to 29-year-old man is 69.6 inches tall, with a standard deviation of 3.0 inches,…

A: Solution: Let X be the height of 20 to 29 year old man and Y be the height of the 20 to 29 year old…

Q: The admission committee of AUCA passes 33% of those who took the exam. If the scores follow a normal…

A:

Q: The combined math and verbal scores for students taking a national standardized examination for…

A: Given: Mean of combined scores of students = 880 Standard deviation of combined scores of students =…

Q: Suppose the exam average in a class is 82% with a standard deviation of 6. What proportion of…

A: Here, mean is 82 and standard deviation is 6.

Q: The mean height of male college students in a large city is 68 inches and the standard deviation is…

A: Answer:----.                       Date:----10/10/2021

Q: The average price of a personal computer is $949. If the computer distributed with a standard…

A: