The average time taken to repair a computer is 13.8 minutes. If the standard deviation is known σ = 2.2

Q: Find the probability that a randomly selected high school student who took the reading portion of…

A:

Q: Find the probability that the weekly unemployment benefit for a person in Idaho is less than U.S.…

A: Let , X→N(μ=272 , σ=43) Our aim is to find the probability that the weekly unemployment benefit for…

Q: The monthly utility bills in a city are normally distributed with a mean of $121 and a standard…

A: Given : The monthly utility bills in a city are normally distributed with a mean of $121 and a…

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

A: Given: Mean, μ=100 Standard deviation, σ=15 (a)  Probability that a randomly selected utility bill…

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 31…

A: P(X>30)=1-Pz<30-311045=1-P(z<-0.67)=1-0.2514=0.7486

Q: Salaries at a large corporation are normally distributed with a mean of $45,000 and a standard…

A: The normal distribution shows the probability value using the standard score or raw score. It is…

Q: Assume that the heights of a population of adults form a normal distribution with a mean µ =69…

A: Consider that there are 12 inches in 1 foot.The provided information is:

Q: The life expectancy of a particular brand of tire is normally distributed with a mean of 30,000 and…

A: Given that.   X~N( μ , ?^2 )   μ=30000    , ?=6000   Z-score =( x - μ )/?

Q: The heights of children 2 years old are normally distributed with a mean of 32 inches and a standard…

A: Consider X be a random variable which follows normal distribution indicates heights of children 2…

Q: A Cuckoo Maran hen lays a mean 300 eggs per year with a standard deviation of 12.7 eggs. The…

A:

Q: The average resident of Metro City produces 770 pounds of solid waste each year, and the standard…

A: We have to find probability that randomly selected person will produce more than 1000 pound wastwm

Q: The expected (mean) life of a particular type of light bulb is 1,000 hours with a standard deviation…

A: Given  Mean = 1000 hrs Standard deviation = 50 hrs To calculate probability for X > 1150 hrs

Q: In​ 2008, the per capita consumption of soft drinks in Country A was reported to be 19.11 gallons.…

A: GivenMean(μ)=19.11standard deviation(σ)=5

Q: Thwhe average arm height of jaguars is 16 inches, with a standard deviation of 2 inches. out of a…

A:

Q: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet…

A: GivenMean(μ)=8.4standard deviation(σ)=1.8sample size(n)=38

Q: The weight of football players is normally distributed with a mean of 180 pounds and a standard…

A:

Q: Furnace repair bills are normally distributed with a mean of 263 dollars and a standard deviation of…

A: Here, µ = 263 and σ = 25.

Q: A population has a mean of 200, a standard deviation of 30, and is normally distributed. A sample of…

A: We want to find the probability  Note: This probability value calculated from standard normal…

Q: The expected (mean) life of a particular type of light bulb is 1,000 hours with a standard deviation…

A: To find: the probability that a randomly selected bulb would last fewer than 1100 hours?

Q: he reading speed of second grade students in a large city is approximately​ normal, with a mean of…

A: P(X>96)=?

Q: The average credit card debt for public school teacher is 14,975. If the debt is normally…

A: Given, Average credit card debt for public school teacher=X=14975 Standard deviation= 5650…

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Given that, μ=28,σ=5 and n=40 The mean and standard deviation of the sample mean is,

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Solution: Let X be the transport time. From the given information, X has mean µ=28 minutes and a…

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

A: Given Information: Mean μ=196 Standard deviation σ=22 Let X denote the number of red meat a person…

Q: The life of a certain type of automobile tire is normally distributed with mean 34,000 miles and…

A: We have to find given probability..

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: An e-reader has a one year warranty. The mean lifespan of the e-reader is 2.5 years, with a standard…

A: From the given information, the mean lifespan of the e-reader is 2.5 years and the standard…

Q: The amount of rain falling in Waimea Canyon State Park, Kauai is normally distributed with a mean of…

A:

Q: The average life of a brand of automobile tires is 30,000 miles, with standard deviation of 2,000…

A: Given: X~N(μ,σ)μ=30000σ=2000

Q: Assume that the heights of a population of adults form a normal distribution with a mean µ =69…

A: It is known that, there are 12 inches in 1 foot.The provided information are:

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Let X be the transport time. From the given information, X has mean µ=28 minutes and a standard…

Q: The diameter of a brand of tennis balls is approximately normally distributed with a mean of 2.5…

A:

Q: The final score for a mathematics exam is normally distributed, with an average score (µ) of 57 and…

A: GivenMean(μ)=57standard deviation(σ)=9.25

Q: a) What is the probability a randomly selected student will read more than 88 WPM?  b)What is the…

A: Answer: Given that the reading speed of second grade students is approximately normal mean = μ = 83…

Q: A certain type of battery has a mean shelf life of 600 days with a standard deviation of 28 days…

A: given mean =600 standard deviation =28

Q: The monthly In distributed, with mean of $100 standard deviation of $13. Find the probability that a…

A:

Q: Johnson Electronics Corporation makes electric tubes. It is known that the standard deviation of the…

A: Given: x=2500σ=145n=105 The probability that the sample mean is within 22 hours of the mean life of…

Q: The average number of acres burned by forest and ange fires in a large New Mexico county is 4,255…

A: HERE GIVEN FOR  NO FO ACRES BURNED BY FOREST  IT IS NORMALLY DISTRIBUTED  MEAN=μ=4255 acres SD=σ=744…

Q: The reading speed of second grade students in a large city is approximately​ normal, with a mean of…

A: Solution: Let X be the reading speed of second grade students in a large city. From the given…

Q: A study of the amount of time it takes to rebuild the transmission for a 2005 Chevy Cavalier shows…

A: Given information- Population mean, µ = 8.4 hours Population standard deviation, σ = 1.8 hours We…

Q: What percentage of the class has a test score between 68 and 82? Approximately how many students…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

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: "Chá. Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Suppose, X be the time takes a shuttle bus. Assume that, X follows Normal distribution with average…

Q: Supppose the average age of family members is 34 with a standard deviation of 4.If the members of…

A:

Q: Find the indicated probability. An insurance company has determined that the cost of a certain…

A: Given information Mean µ = $800 Standard deviation σ = $40