According to a study, BMI among men aged 16-61 in the world follows a Normal distribution with mean 25.27 kg/m2 and variance 15.36 (kg/m2)2. What is the BMI of a man who caps the 20th percentile of men? Round to 4 decimal digits.

Q: How to calculate the population standard deviation?

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Q: What meadure of variability would you use for a data set with a normal distribution?

A: 1. Basic Arithmetic:You should be comfortable with basic arithmetic operations such as addition,…

Q: Quartering a positive mean (dividing by 4) has what effect on the normal curve?

A: The normal distribution: A continuous random variable X is said to follow normal distribution if the…

Q: Medical research suggests that systolic blood pressure in adults is approximately normally…

A: Denote X as the blood pressure in adults. It is given that X is approximately normally distributed,…

Q: Why is the standard deviation used more frequently than the variance as a measure of variability?

A: The standard deviation and variance, are measures of dispersion (variability).  The relation between…

Q: Explain the the Chi-Squared Distribution?

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Q: Women's heart beats per minute  are normally distributed with a mean of 72bpm and a std. dev. of…

A: We have to find the percent of women who would have heartbeats between 48bpm and 96bpm.

Q: Explain the key features of a normal distribution

A: Normal Distribution :  The normal distribution is also called as Gaussian distribution. It is made…

Q: What is the benefit of modeling a random variable with a normal distribution

A: Here we have to give the reason for the benefit of modeling a random variable with a normal…

Q: scores on an exam follow an approximately Normal distribution with a mean of 76.4 and a standard…

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Q: What percentage of scores in a normal distribution fall at or above a z score of 1.04?

A: given data  normal distribution percentage of scores above Z:1.04 = ?

Q: The amount of time students study for an exam follows a normal model with a mean of 6 hours and a…

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Q: Scores on an exam follow an approximately Normal distribution with a mean of 76.4 and a standard…

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Q: What proportion of a normal distribution is located between the mean and z = 2.00?

A: proportion of a normal distribution is located between the mean and z = 2.00

Q: What does the population standard deviation reflects?

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Q: College students average 8.4 hours of sleep per night with a standard deviation of 35 minutes. If…

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Q: If a regulation basketball is 12 PSI (pounds of force per square inch of area) with a standard…

A: Percentile : Percentile is the number such that certain percentage of data fall below that value.…

Q: The amounts of time students study for an exam follows a normal model with a mean of 6 hours and a…

A: Obtain the standard z-score for the random variable X equals 3.5. The standard z-score for the…

Q: makes a distribution a normal distribution?

A: Properties of normal distribution  a) The mean , median and mode of a distribution is same it is…

Q: standard deviation 0.9 minute. What proportion of the time does Mrs. Starnes finish an easy Sudoku…

A: It is given that  Mean, μ = 5.3 Standard deviation, σ = 0.9

Q: What proportion of scores are above z-score of 1.0 in a normal distribution?

A: We want to find P(Z>1)= ?

Q: According to Our World in Data, male heights follow a normal distribution with µ =178.4 cm and o=…

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Q: What is formula for the variance of the population?

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Q: The average age of cars on the road in the United States follows a normal distribution with a mean…

A: The random variable age of car follows normal distribution. The population mean is 11.9. The…

Q: About what percentage of a normal distribution falls within 2.5 standard deviations of the mean?

A: 98.76 percentage of a normal distribution falls within 2.5 standard deviations of the mean

Q: Head circumferences of some males have a bellshaped distribution with a mean of 57 centimeters and a…

A: Head circumferences of some males have a bell-shaped distribution with a mean of 57 centimeters and…