The hip width x of adult females is normally distributed with mean 38.3 cm and standard deviation 4.31 cm. The minimum width of an aircraft seat that will accommodate 98% of all adult women is about

Q: The means of two single large samples of 1200 and 2300 members are 76.5 inches and 86 inches…

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Q: he distance from the seat back to the front of the knees of seated adult males is normally…

A: The normal distribution  in the center are generally denser and basically less denser at tails.…

Q: he fill volume of cans filled by a certain machine is normally distributed with mean 12 oz and…

A: Z be the standard normal distribution Where as, Z = (X-µ)/σ  Now in above mean (µ)  = 12 and…

Q: Suppose the heights of 10-year-old boys in the US vary according to a normal distribution with a…

A: The objective of this question is to find the percentile of a boy with a height of 140 cm given that…

Q: Men's heights are normally distributed with mean 69.3 inand standard deviation 2.94 in. Women's…

A: Let X denote the Women's heights and it follows normal distribution with mean μ=63.8 in and standard…

Q: The height for an adult American male resident is normally distributed with average 175.3…

A: given data normal distribution μ=175.3σ=7P(x>171)=?

Q: A data set with an unknown distribution has mean ?=360 and standard deviation ?=20.  State Chebyshev…

A: Given , μ = 360 , σ = 20

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

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: According to National Health Survey heights of men are normally distributed with mean of μ=69.0…

A: The standard deviation is obtained below Critical value: From the standard normal distribution…

Q: The lengths of pregnancies are normally distributed with a mean of 280 days and a standard deviation…

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Q: Suppose that striped dolphin lengths are normally distributed with a population standard deviation…

A: The formula for the minimum sample size is as follows: Here, zα/2 is the critical value at 95%…

Q: The heights of a pediatricians three-year-old females are approximately normally distributed, with…

A:

Q: Assume that the weights of quarters are normally distributed with a mean 5.67 gram and a standard…

A: Given that, The weights of quarters are normally distributed with a mean 5.67 gram and a standard…

Q: Assuming that the heights of college women are normally distributed with mean 64 inches and standard…

A:

Q: A mechanical device has a wear out time distributed normally with a mean of 1100 hours and a…

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Q: he lengths of footlong sub sandwiches at a local sub shop follow an approximately normal…

A: given data  normal distribution  μ = unknown σ = 0.2P(x<11.7) = 0.20μ = ?

Q: Women's height are normally distributed with a mean of 63.7 inches and a standard deviation of 2.9.…

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Q: The mean weight of a new- born baby is 7.58 pounds with a standard deviation of 0.67 pounds. Assume…

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Q: The height of men is a normally distributed variable with a mean of 68 inches and a standard…

A: Mean(μ)=68Standard deviation(σ)=3

Q: A quantitative data set of size 80 has mean 45 and standard deviation 2. Approximately how many…

A: The given values are, The formula for calculating the value of k is, The values of k are,

Q: The daily sleep duration among college students is normally distributed with a mean of 7.13 hours…

A: Solution

Q: If the number of degrees of freedom for a chi-square distribution is 28, what is the population mean…

A: It is known that for chi-square distribution: μχ2=degree of freedom   So,μχ2=28

Q: The annual rainfall in a certain region is approximately normally distributed with mean = 41.3…

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Q: The length of pregnancies are normally distributed with mean of 268 days and a standard deviation of…

A: Given : Length of pregnancies = X  X is normally distributed  Mean of X = 268 days  Standard…

Q: Women's height are normally distributed with a mean of 64.7 inches and a standard deviation of 3.1.…

A: Given that.   X~N( μ , ?)   μ=64.7     , ?=3.1   Z-score =( x - μ )/?

Q: A normal population has the mean m=70 and standard deviation 20. what proportion of the population…

A: Obtain the proportion of the population is greater that 95. The proportion of the population is…

Q: when designing aircraft cabins, what ceiling height will alow 98% of men to stand without bumping…

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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 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: Assume that the hourly cost to operate Saint-Martin Hyundai bus follows the normal distribution with…

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Q: What is the proportion of vehicles less than or equal to the speed limit?

A: Let , X→N(μ=71 , σ=8) Our aim is to find the proportion of vehicles less than or equal to the speed…

Q: A process is in statistical control with a mean of 79.5 mm and a standard deviation of 1.85. The…

A: The mean of the data is 79.5 mm. The standard deviation of the data is 1.85 mm. The upper…

Q: 1. A question posted on the website of a daily newspaper in the Philippines asked visitors of the…

A: 1. Here population is all visitors votes who visit the website. The sample is out of all visitors…

Q: The parts per million concentrations of a particular toxic substance in a wastewater steam is known…

A: Percentile is a type of measurement that used to understand the location of the variables. It…