The masses of red boxes are normally distributed with mean 1.0 kg and standard deviation 2.0 kg. The masses of black boxes are normally distributed with mean 1.5 kg and standard deviation 3.0kg. Find the probability that 2 red boxes are more than twice as heavy as once black box.

Q: The diameter of a brand of tennis balls is approximately normally​ distributed, with a mean of 2.53…

A: Given,sample size(n)=10mean(μ)=2.53standard deviation(σ)=0.04

Q: The average cholestrol content of a certain brand of eggs is 215 milligrams and the standard…

A:

Q: A quart of Parker's milk contains a mean of 42 grams of butterfat, with a standard deviation of 2.5…

A:

Q: The average cholesterol content of a certain brand of eggs is 225 milligrams, and the standard…

A:

Q: Suppose the mean amount of cholesterol in eggs labeled “large” is 186  milligrams, with standard…

A: Given that  μ = 186 , ? = 7 , n = 144

Q: The amounts of electricity bills for all households in a city have a skewed probability distribution…

A:

Q: Assume that blood pressure readings are normally distributed with a mean of 130 and a standard…

A:

Q: The sick leave time of employees in a firm in a month is normally with a mean of 100 hours and a…

A: Dgg

Q: The time that people stand in the waiting line at a particular fast food restaurant is normally…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 18 inches,…

A: Let X be the random variable from normal distribution with mean (μ) = 18 inches and standard…

Q: The average rainfall, recorded to the nearest hundredths of a cm, in Roanoke, Virginia for the month…

A:

Q: At a large manufacturing company, the mean age of workers is 37 years, and the standard deviation is…

A: Given: Mean μ = 37 Standard deviation σ=6 Sample Size n = 44 As we know that if X~N(μ, σ) then…

Q: The height of the dogs in a pet shop is normally distributed with the average height of 25 cm and…

A:

Q: The heights of University players are normally distributed with a mean of 160 cm and a standard…

A:

Q: The diameter of the dot produced by a printer is normally distributed with a me 0.002 inch and a…

A: Given data,Mean μ=0.002sd     σ=0.0004

Q: Assume that the women's heights are normally distributed with a mean of 63.7 inches and a standard…

A:

Q: The average repair cost of a microwave oven is 55$, with a standard deviation of 8$. The costs are…

A: Here, mean is µ = 55, standard deviation is σ = 8, and n = 4.

Q: The weights of college football players are normally distributed with a mean of 200 pounds and a…

A: Z = x¯ - μσn~N(0,1)

Q: The height of the dogs in a pet shop is normally distributed with the average height of 25 cm and…

A:

Q: The probability that a person who exercises and eats well has a heart attack is predicted to be 0.5…

A: We know that if; Y~Binomial(n,p)Then the expected value of Y is;E(Y)=npand the standard deviation of…

Q: A manufacturer of power tools claims that the average amount of time required to assemble their…

A: Solution: Let X be the amount of time required to assemble their top of the line table saw. From the…

Q: A manufacturing company measures the weight of boxes before shipping them to the customers. If the…

A: It is given that: The population mean of the weight of boxesμ=200 The population standard deviation…

Q: Assume that blood pressure readings are normally distributed with a mean of 117 and a standard…

A: From the provided information, Mean (µ) = 117 Standard deviation (σ) = 8.4 Sample size (n) = 37 Let…

Q: An electrical firm manufactures incandescent light bulbs that have a length of life (in hours) that…

A:

Q: The probability that a person who exercises and eats well has a heart attack is predicted to be 0.3…

A: Given that  The probability that a person exercises and eats well has a heart attack is predicted to…

Q: The average cholesterol content of a certain canned goods is 215mg and the standard deviation is…

A: The average cholesterol content of a certain canned goods is 215mg and the standard deviation is…

Q: The amount of time that sales managers devote to their jobs per week is normally distributed with a…

A: Given: μ=54σ=5n=30 a. The probability that randomly selected sales manager works for more than 55…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 15 inches,…

A: Mean = 15 Standard deviation = 1

Q: At a large publishing company, the mean age of proofreaders is 36.2 years, and the standard…

A: Given - At a large proofreader company is ,the mean of proofreader is μ = 36.2 and standard…

Q: The wingspans of the females of a certain species of bird of prey form a normal distribution with…

A:

Q: The average height of a certain age group of people is 53 inches. The standard deviation is 4…

A: Solution-: Given: μ=53inches,σ=4inches We find, P(a selected individual's height will be greater…

Q: assume that blood pressure readings are normally distributed with a mean of 135 and a standard…

A:

Q: The diameter of the dot produced by a printer is normally distributed with a mean diameter of 0.002…

A:

Q: goods

A: Let X be the random variable such that  cholesterol content of a certain canned goods. The average…

Q: In a 15-day period, the amount of growth for a population of sunflower plants was found to be a…

A: Here it is given that the growth of sunflower is normally distributed with mean=3.18 and SD=0.52…

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A:

Q: Suppose that heights of women at UT Tyler are normally distributed with a mean of 64 inches and a…

A: It is given that the mean is 64 and standard deviation is 2.4.

Q: he weight of the package is normally distributed with a mean of 650 g and a standard deviation of 42…

A: Given that  The weight of the package is normally distributed with a mean of 650 g and a standard…

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

A: Let X is the random variable representing lengths of human pregnancies. X~Normalμ=268,σ=16

Q: The mean time required to assemble a bicycle is 20.5 minutes and the standard deviation is 2.3…

A: The standard normal variate is calculated using the sample mean, population mean and population…

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

A:

Q: The mean weight of 18-year-old females is 126 pounds, and the standard deviation is 15.7. If a…

A: Here it is given that the mean weight of 18 year old females is normally distributed with mean=126,…

Q: The weights of badgermoles in the Earth Kingdom are normally distributed, with mean weight 1450kg…

A:

Q: The amount of time between taking a pain reliever and getting relief is normally distributed with a…

A: The mean of the data is 25. The standard deviation of the data is 3.

Q: Assume that blood pressure readings are normally distributed with a mean of 122 and a standard…

A: Assume that blood pressure readings are normally distributed.

Q: The diameter of a brand of tennis balls is approximately normally​ distributed, with a mean of 2.53…

A: Let X be the diameter of a brand of tennis balls which follows normal distribution with mean 2.53…

Q: A city temperature is modeled as a normal random variable with mean and standard deviation both…

A: given data,  Mean (μ) = 10  S.D(σ) =10Let X be normally distributed random variable P(X≤15) = ?

Q: The height of women in the United States is normally distributed with a mean of 165 cm and standard…

A: The normal distribution has curve with bell shape and it is symmetric about the mean. The normal…

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

A: Consider,X be a random variable that represents the lengths of human pregnancy which is normally…