If the average weekly wages of 1000 families is normally distributed around a mean of Rs. 70 with a standard deviation of Rs. 5, what would be the lowest weekly wage of the 100 highest paid workers.

Q: The average American family of four spends $5,000 per year on food prepared at home. Assuming a…

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Q: A 4 year college will accept any student ranked in the top 60% of a national exam. If the test…

A: From the given information,Mean (µ) =600Standard deviation (σ) = 100Let the test score be a x which…

Q: When Tallulah runs the 400 meter dash, her finishing times are normally distributed with a mean of…

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Q: What is the maximum blood pressure reading of the lowest 70% of adult males?

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Q: Suppose a small paint manufacturing company has a daily production that is normally distributed with…

A: Solution: It is given that a small paint manufacturing company has a daily production that is…

Q: If grades on a certain test are approximately normally distributed with a mean of 75 and a standard…

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Q: The incomes of trainees at a local mill are normally distributed with a mean of $1100 and a standard…

A: The provided information are: Population mean (µ) = 1100 Population standard deviation (σ) = 150…

Q: Suppose a car driven under specific conditions gets a mean gas mileage of 40 miles per gallon with a…

A: Assuming that the mileage data is normally distributed, we'll calculate the z-statisic and then find…

Q: When Nachelle runs the 40o meter dash, her finishing times are normally distributed with a mean of…

A: The empirical rule for normal distribution states that 95% of data lies within 2 standard deviations…

Q: If grades on a certain test are approximately normally distributed with a mean of 75 and a standard…

A: The random variable X is defined as the grades on a certain test follows normal distribution with a…

Q: if an approxemitly  bell shaped distribution has a mean of 30 and standard deviation of 5, what…

A: Given that  X~N( μ = 30 , ? = 5 ) μ = 30 , ? = 5 Formula for Z-score Z-score =( x - μ )/?

Q: Suppose the life span of a calculator manufactured by Texas Instruments has a normal distribution…

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Q: From the empirical rule we can deduce that, for any distribution, 95% of the observations fall…

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Q: If gasoline in a certain part of the country has a mean price of $1.62 per gallon and a standard…

A: From the given information, Mean = $1.62 gallon Standard deviation =8 cents =$0.08 gallon (since 100…

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: The weights of miniature horses are roughly normally distributed with a mean of 230 pounds and…

A: Given : The weights of miniature horses are roughly normally distributed with a mean of 230 pounds…

Q: heights of adult women in the United States are normally distributed with a mean of 65 inches and a…

A: The z score can be calculated as: z=x-μσ The required z score that is associated with the top 10% or…

Q: The gestation period for human births can be taken as normally distributed with a mean of 256 days…

A: Given: The gestation period for human births can be taken as normally distributed with a mean of 256…

Q: If a one-person household spends an average of $62 per week on groceries, find the maximum and…

A: GivenMean(μ)=62standard deviation(σ)=10

Q: One year Sam had the lowest ERA (earned-run average, mean number of runs yielded per nine innings…

A: From the provided information, The mean and standard deviation for the males ERA are as follow: Mean…

Q: Suppose the scores of students on an exam are normally distributed with a mean of 458 and a standard…

A: Using empirical rule of probabilityfor normal distribution.which is  68% data cover by μ±σ 95%…

Q: If grades on a certain test are approximately normally distributed with a mean of 75 and a standard…

A:

Q: If the mean exam score of a class was 75%, with a standard deviation of 15%,what percent of students…

A: Given,mean(μ)=0.75standard deviation(σ)=0.15

Q: Suppose that salaries for recent graduates of one university have a mean of $24,900 with a standard…

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Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 103 and a standard deviation…

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Q: Find their respective​ z-scores. Which player had the better year relative to their​ peers, Hank or…

A: Given For males, μ=4.296σ=0.907 For females μ=3.764σ=0.866

Q: Suppose the birth weights of babies in a particular country are normally distributed with a mean of…

A: Answer:

Q: If the number of dust particles in a square meter on a surface follows a Poisson distribution with a…

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Q: As the size of a sample increases, the standard deviation of the distribution of sample means…

A: Here  Standard deviation of sample mean = σn

Q: Suppose annual salaries for sales associates at Target have a mean of $32,500 and a standard…

A: From the provided information, Mean (µ) = $32500 Standard deviation (σ) = $2500 X~N (32500, 2500)…

Q: Ted had the lowest ERA​ (earned-run average, mean number of runs yielded per nine innings​ pitched)…

A: According to the given information in this question We need to find the z score

Q: Suppose the mean blood glucose of a population of adults is 162 with a standard deviation of 58.…

A:

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: If a sample of 144 male weights has a mean of 266 pounds and standard deviation of 32 pounds. The CV…

A: Given data Mean (x̅ ) = 266Standard deviation (s) = 32Coefficient of variation(CV) for sample is…

Q: A population is normally distributed and has a mean of 50 and a standard deviation of 5 If we…

A: As we know the empirical rule of 68 - 95 - 99.7 that is the percent value that are one, two or three…

Q: We have a group of families whose annual incomes are normally distributed with a mean of $45,000 and…

A: It is given that the mean is 45,000 and standard deviation is 11,000.

Q: If the average age of retirement for the entire population in a country is 60 years and the…

A:

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation…

A:

Q: The number of Facebook friends students at a university have are Normally distributed with a mean…

A: Normally distributed with a mean = 1200  Standard deviation = 200

Q: A professor has found that the grades on the Statistics Final are normally distributed…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ  are the mean…

Q: suppose the heights of 18-year-old men are approximately normally distributed, with mean 73 inches…

A:

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

A: let X be the distance of fly balls hit to the outfield X~N(mu=260,sigma^2=50^2) n=49 we want to find…

Q: If you draw a sample of size 10 from a population of size 35 with a population mean of 83.4 and…

A: In question, Given that you draw a sample of size 10 from a population of size 35 with a population…

Q: Suppose that the volume of sound generated by heavy machinery in a factory is normally distributed,…

A: Consider X be a random variable which follows normal distribution indicates volume of sound…

Q: A distribution is known to be bell-shaped, with a mean of 82 and a standard deviation of 6. What…

A: Obtain the Z-score for the random variable X equals 76. The Z-score for the random variable X equals…

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

A: Given that  The distance of flyballs hit to the outfield (in base ball)  normally distributed with…

Q: If the average height of miniature poodles is 30 cm with a standard deviation of 4.1 cm, what…

A:

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

A:

Q: The mean temperature (of daily maximum temperatures) in July for Dallas–Ft. Worth, Texas, is 85…

A: Solution: Let X be the temperature in July for Dallas-Ft,worth, Texas. From the given information, X…