A mobile phone company finds the lifespan for one brand of its mobile phones is normally distributed with a mean of 48,400 hours (approx. 5.5 years) and a standard deviation of 5000 hours. Answer the following: If the manufacturer is willing to replace no more than 10% of the mobile phones, what should be the approximate number of hours for a warranty? Note: Express your answer in whole number. Blank 1 What is the probability that a mobile phone will last between 36,400 hours and 44,400 hours? Note: Express your answer in four decimal places. Blank 2 What is the probability that a mobile phone will last at least 55,900 hours? Note: Express your answer in four decimal places. Blank 3

Q: A Texas Instrument calculator operating life is normally distributed with a mean of 3,850 hours, and…

A: Given information- Population mean, μ = 3850 hours Population standard deviation, σ = 350 hours…

Q: Given a normal population whose mean is 665 and whose standard deviation is 24, find each of the…

A: The following information has been given: The population mean is μ=665. The population standard…

Q: The weight of trucks traveling on a particular section of I-475 has a population mean of 15.8 tons…

A: Central limit theorem: The central limit theorem implies that the distribution of the sample means…

Q: A civil engineer takes a public ride going to his firm. The average time for his trip is 24 minutes,…

A: Given Information: Population mean (u) = 24 minutes Standard Deviation (s) = 3.80 minutes Target…

Q: Suppose that the monthly charges for cell phone plans in the United States are normally distributed…

A: Let:Monthly charges for cellphone plans = xGiven that:Monthly charges for cellphone plans (x) in the…

Q: Solve the following. Show your complete solution. The amount of time that sales managers devote to…

A:

Q: The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation…

A: Given that, the lengths of pregnancies are normally distributed with a mean of 266 days and a…

Q: mechanic sells a brand of automobile tire that has a life expectancy that is normally​ distributed,…

A:

Q: Bryse is 27 years old. Based on a normal distribution with mean 47.8 years and standard deviation…

A: GivenBryse is 27 years oldx=27Mean(μ)=47.8standard deviation(σ)=12.6

Q: The life expectancy of a particular brand of tire is normally distributed with a mean of 40,000 and…

A: given population mean=40000 population sd =5000  probability that a randomly selected tire will have…

Q: A courier company that operates in the Tijuana metropolitan area takes an average of 36 minutes to…

A: Answer: From the given data, Let X denotes delivery time of a courier company that operates in the…

Q: If 70 shafts are sampled at random from the batch, what is the probability that the mean diameter of…

A: Let X be the random variable of the diameter of metal shafts produced in a manufacturing…

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

A: We are given,μ = 196σ = 22n = 60

Q: Blood pressure is distribued Normally, with a mean of 85 mm and a standard deviation of 20 mm. As a…

A: Given,mean(μ)=85standard deviation(σ)=20sample size(n)=100

Q: The lengths of pregnancies are normally distributed with a mean of 267 days and a standard deviation…

A: Given information: Let X be the lengths of pregnancies. X~Nμ=267, σ=15

Q: Traveling between two campuses via shuttle bus takes, on average, 28 minutes with a standard…

A:

Q: The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation…

A: The problem presented involves a normal distribution of pregnancy lengths with a mean of 269 days…

Q: What does the result​ suggest?     A. The result suggests the event did not occur.   B. The result…

A: From given data: Mean μ=268, standard deviation σ=15

Q: Given a normal population whose mean is 435 and whose standard deviation is 37, find each of the…

A: Let X be the random variable from normal distribution with mean (μ) = 435, standard deviation (σ) =…

Q: Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have…

A:

Q: The lengths of pregnancies are normally distributed with a mean of 270 days and a standard deviation…

A: a) Normal distribution , μ = 270  , σ = 15 (given)    Let x be the number of days of pregnancy for…

Q: An online retailer operates two independent warehouses (A & B) where it keeps its inventory. Each…

A: Solution: given that Each warehouse has a .05 probability of experiencing a fire. If a fire is…

Q: In a letter to an advice​ column, a wife claimed to have given birth 307 days after a brief visit…

A: The lengths of pregnancies are normally distributed with a mean of266 days and a standard deviation…

Q: The lengths of pregnancies are normally distributed with a mean of 270 days and a standard deviation…

A: Pregnancy Length AnalysisGiven:Pregnancy lengths are normally distributed with a mean (μ) of 270…

Q: use an ti84 device to solve.  The head of maintenance at XYZ Rent-A-Car believes that the mean…

A: Given: Mean μ=4959 Standard deviation σ=448 Sample size n=43

Q: The Australian Emergency department reports that the average time it takes to respond to an…

A:

Q: ortion of firms will earn a return between 4% and 8%? B   To the nearest percent find the…

A: given: mean (μ)= 7.5 standard deviation(σ)=2.5

Q: The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation…

A:

Q: Suppose that the number of points scored in a game comes from a normal population with an average of…

A: Here points scored follows Normal distribution with mean 12 and SD 9. Here we need to use the…