a hamcer of ponts scored by each team in the NHL at the end of the season is normally distributed with a mean of 80 and a standard deviation 1 If there are 30 teams, approximately how many scored at least 74 points. teams

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard…

A:

Q: A company pays its employees an average wage of $22.50 an hour with a standard deviation of $2.30.…

A: Given data: Mean = $22.50 an hour standard deviation = $2.30 To find: What is the highest 5% of the…

Q: If we know that the length of time it takes a college student to find a parking spot in the library…

A: # X be the  length of time it takes a college student to find a parking spot in the library parking…

Q: The Stanford-Binet IQ test is scaled so that scores have a mean of 100 and a standard deviation of…

A: Let "X" be the Stanford-Binet IQ test

Q: Scores on a certain standarized test have a mean of 500, and a standard deviation of 50. How common…

A: Given, Mean = μ =500SD = σ = 50

Q: In a certain factory of rags, the time it takes for the workers to finish one rag is normally…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: A population has a standard deviation of 18. On average, how much differece should exist for a…

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Q: Suppose the grades in a mathematics class are Normally distributed with a mean of 75 and a standard…

A: Introduction :-  Here the grades in a mathematics class are Normally distributed with a mean of 75…

Q: The monthly salaries of accountants in one region of the country are normally distributed with a…

A: Given Data Population Mean,μ = 49000 Population Standard Deviation,σ = 4500

Q: On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of…

A: Solution: Let X be the IQ of an individual. From the given information, X follows normal…

Q: Scores on a recent national statistics exam were normally distributed with a mean of 80 and standard…

A: Obtain the standard z-score for X equals 89 The standard z-score for X equals 89 is obtained below:…

Q: 1. On a final examination in Mathematics, the mean was 76 and the standard deviation was 5.…

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

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 28…

A: P(X<30)=Pz<30-28540=P(z<2.53)=0.9943

Q: Suppose that the duration of a particular type of criminal trial is known to be normally distributed…

A: Given that, If X is normally distributed, X~N(21,7) Mean,mu = 21, Standard deviation, sigma=7 X =…

Q: A highway study of 8000 vehicles that passed by a checkpoint found that their speeds were normally…

A: Answer - A highway study of  N = 8000 vehicles that passed by a checkpoint found that their…

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

A: GivenMean(μ)=810standard deviation(σ)=280

Q: The time that a customer takes to complete a transaction in a business line at the bank follows a…

A: Given data,Mean μ=5.4sd    σ=1.7How many minutes will 20% of the customers spend completing a…

Q: Find the indicated probability. The weekly incomes of a summer intern in Tesla are normally…

A: Given data,Mean μ=1500sd    σ=300P(X<1200)=?

Q: The monthly income of residents of Daisy City is normally distributed with a mean of $3000 and a…

A: GivenMean(μ)=3000standard deviation(σ)=500

Q: A consumer group claims that the mean annual consumption of banana by a person in the Philippines is…

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Q: A set of data items is normally distributed with a mean of 60. Convert the data item to a z -score,…

A: Solution: z-score for given data item is 1.

Q: Assume the heights of women are normally distributed with a mean of 63.6 inches and a standard…

A: Given data Mean (µ) = 63.6 inches Standard Deviation(σ) = 2.5 inches Sample size (n)= 75 probability…

Q: The average hourly wage for manufacturing workers in the United States is $20.89 per hour, With a…

A: Give that  The hourly wage for manufacturing workers in united states is $20.89 μ = 20.89 Standard…

Q: Fraveling between two campuses of a university in a city via shuttle bus takes, on average, 28…

A: We want to find the probability  P(xbar>30)

Q: A set of exam scores is normally distributed with a mean = 82 and standard deviation = 7. % of…

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Q: Suppose a nomal distribution has a mean of 50 and a standard deviation of 3. What is Pes 47)?

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Q: A population has µ = 50 and o - 5. If 10 points are added to every score in the population, what are…

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Q: The grades of a statistics midterm are normally distributed with a mean of 79 and a standard…

A: Normal distributionμ=79σ=3.5pgrade between74 and 80=?

Q: In a certain distribution of numbers, the mean is 40 with a standard deviation of 5. Atleast what…

A: Given data: Mean = 40 standard deviation = 5. To find: Atleast what fraction of the numbers are…

Q: The average number of moves a person make in his/her lifetime is 12 and the standard deviation is…

A: Given,sample size(n)=25mean(μ)=12standard deviation(σ)=3.5

Q: If a population has a standard deviation σ , then the standard deviation of the mean of 100 randomly…

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

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Q: Scores on a test are normally distributed with a mean of 64 and a standard deviation of 10.8. Find…

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Q: HA manufacturer of Energy Saving Lamps has a product life that is normally distributed with a…

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Q: The average score of the students of a certain class in a 100-item quiz is 83 with a standard…

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Q: A population has a mean of μ and a standard deviation of  . a. If 3 points were added to every…

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Q: If you buy one ticket everyday for 365 days, find the mean and standard deviation for the numbers of…

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Q: In certain distribution of numbers,the mean is 70 with a standard deviation of 3. At least what…

A: Given, Mean μ = 70 Standard deviation σ = 3

Q: The speed of cars  on a specific road is normally distributed with a mean of 54 mph and a standard…

A: Let us denote X= The speed of cars  on a specific roadGiven that X follows a normal distribution…

Q: A particular fruits weights are normally distributed, with a mean of 797 grams and a standard…

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Q: The scores of students on an exam are normally distributed with a mean of 193 and a standard…

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Q: The monthly utility bills in a city are normally distributed with a mean of $100 and a standard…

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Q: In a certain factory of rags, the time it takes for the workers to finish one rag is normally…

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Q: The number of cars crossing the Pigeon River border crossing each day is known to be normally…

A: GivenMean(μ)=2500standard deviation(σ)=600

Q: The number of points scored by éäch at the end of the season is normally distributed with a mean of…

A:

Q: A population has μ = 50 and σ = 5. If 10 points are added to every score in the population, what are…

A: Consider, (µ) = 50 and (σ) = 5 Let, X be the scores of the population. If 10 points are added to…