O An electrical firm manufactures light bulbs that have a length of life tha is normally distributed with mean equal to (800) hours and a standard deviation of (40) hours. Find the probabilitythat a bulbo burns between-778 and 834 hours?

Q: During a recent week the mean price of regular gasoline in Houston was $2.15 with a standard…

A: Given information- Population mean, μ = $2.15 Sample size, n = 36 Population standard deviation, σ =…

Q: A local fast food restaurant advertises an average service time of u = 3 minutes with a standard…

A: Given Data : Population Mean,μ = 3 Population Standard Deviation,σ = 0.39

Q: Let x denote the time it takes to run a road race. Suppose x is approximately normally distributed…

A: The mean and standard deviation are 190 and 21, respectively.

Q: The average credit card debt for college seniors is $3262. If the debt is normally distributed with…

A:

Q: The number of people getting sick from imported meat products in a certain city in one month was…

A: Given data,μ=190σ=22P(X>160)=?

Q: The average number of miles driven on a full tank of gas in a certain model car before its​ low-fuel…

A: It is given that the mean is 399 and the standard deviation is 36.

Q: The average credit card debt for college seniors is $ 3262. If the debt is normally distributed with…

A: Solution: Let X be the debt. From the given information, X follows normal distribution with mean…

Q: The stock price for international Business Machines historically has folowed an approximately normal…

A: Given: μ = ​$155.483 σ = $4.0278

Q: Q2/ The speed of a file transfer from a server on campus to a personal computer at a student's home…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of h=100 and standard…

A: Let "X" be the IQ score of the adults.

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

A:

Q: The life of a semiconductor laser at a constant power is normally distributed with a mean of 7500…

A:

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

A:

Q: The weekly amount spent by an event management company for travel has approximately a normal…

A: From the provided information, Mean (µ) = $2500 Standard deviation (σ) = $400 Let X be a random…

Q: While checking receipts at Reds, it was determined that the average amount spent on       food per…

A: Mean = 21.50 Standard deviation = 2.22 n = 8

Q: The amount of revenue of a shop is approximately normally distributed with a mean of $4500 and a…

A: We have to find out given probability..

Q: Q.2. Suppose that on an average 90 patients recover from a delicate heart operation with standard…

A: As per bartleby guideline for more than three subparts only first three are to be answered please…

Q: On average a supermarket sells 500 litres of milk a day with a standard deviation of 50 litres. If…

A: Assume, X be the random variable representing the quantity of milk sold per day (in liters). It is…

Q: Find the indicated probability. The weekly incomes of a summer intern in Tesla are normally…

A: Given data,Mean μ=1500sd    σ=300P(X<1200)=?

Q: A new brand of cell phone battery has a mean battery life of 54 hours with a standard deviation of…

A:

Q: John drives to work each morning, and the trip takes an average of u = 38 minutes. The distribution…

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: The psychomotor retardation scores of 1500 manic depressive patients were found to be normally…

A: From the provided information, Mean (µ) = 930 Standard deviation (σ) = 130 X~N (930, 130) Here X be…

Q: Let x denote the time taken to run a road race. Supposex is approximately normally distributed with…

A: Ans: Given,   X ~ N(μ, σ)        Where  μ  = 190 minutes   and σ  = 21 minutes        Find  P( 219…

Q: The personal office at a large electronics firm regularly schedules job interviews and maintains…

A: Given, Mean = 34 Standard deviation = 7 Sample size = 9   The objective to is find the probability…

Q: While checking receipts at Reds, it was determined that the average amount spent on food per table…

A:

Q: For a certain type of smart phone the length of time between charges of the battery is normally…

A: Let X denotes the length of time between charges.  It is given that X~ N (50, 15).

Q: The owner of a small convenience store is trying to decide whether to discontinue selling magazines.…

A: From the provided information, 5% of the customers buy magazines and thinks that he might be able to…

Q: In a particular city, the weight of newly born babies is normally distributed with a mean of 3.5 kg…

A:

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.3…

A: Please refer to the image below.

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: Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard…

A:

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

A: Given  Mean (mu) = 100 hours Standard deviation = s= 20 hours

Q: The popular restaurant is 23.5 minutes, with a standard deviation of 3.6 minutes. Assume the…

A: From the provided information, Mean (µ) = 23.5 Standard deviation (σ) = 3.6 X~N (23.5, 3.6) Here X…

Q: "An electrical firm manufactures light bulbs that have a length of life that is approximately…

A: Given data,Mean μ=809sd   σ=89if n=36P(790<X<814)=?

Q: The average number of miles driven on a full tank of gas in a Hyundai Veracruz before its low-fuel…

A: Let "X" be the average number of miles driven on a full tank.

Q: n a recent year, the average daily circulation of the Wall Street Journal was 2,276,207. Suppose the…

A: We have given that the random variable X is normally distributed with mean 2276207 and standard…

Q: A manufacturer of light bulbs claims that its light bulbs have a mean life of 702 hours and a…

A: Given that, μ=702σ=124n=130 The mean and standard deviation of the sample mean is,

Q: A biologist found the wingspans of a group of monarch butterflies to be normally distributed with a…

A:

Q: The arrival schedule of an ETS train from Kuala Lumpur to Sungai Petani follows a normal…

A: Given: X~N(μ,σ)μ=0954σ=7.4 The train is expected to arrive at 0948.

Q: (b)The daily withdrawals from an ATM located at a service station is normally distributed with a…

A: x=5000σ=800

Q: The life expectancy of Timely brand watches is normally distributed with a mean of four years and a…

A: Given that The life expectancy of Timely brand watches is normally distributed with a mean of four…

Q: The personal office at a large electronics firm regularly schedules job interviews and maintains…

A: Given, μ=34 minutesσ=7 minutesn=9

Q: The personal office at a large electronics firm regularly schedules job interviews and maintains…

A: Given: Population mean μ=34Population standard deviation σ=7 Sample size(n)  = 9 Consider X be the…

Q: Assume that the traffic to the web site of Smiley's people, Inc., which sells customized T-shirts,…

A: Given information- Population mean, µ = 4.4 million Population standard deviation, σ = 740000 =…

Q: For a certain type of computers, the length of time between charges of the battery is normally…

A:

Q: Suppose that SAT scores among U.S. college students are normally distributed with a mean of 500 and…

A:

Q: The personal office at a large electronics firm regularly schedules job interviews and maintains…

A: Points on sampling distribution of the sample mean: If the true population distribution of a random…

Q: A local fast food restaurant advertises an average service time of u = 3 minutes with a standard…

A: Let X be the random variable from normal distribution with mean (μ) = 3 and standard deviation (σ) =…

Q: Suppose (rounded to the nearest thousand) that the mean cost of a house is $152,000 with a standard…

A: Given Information: Population mean (u) = $ 152,000 Standard Deviation (σ) = $ 44,000 1. To find the…