The lifetime of lightbulbs that are advertised to last for 4800 hours are normally distributed with a mean of 4950 hours and a standard deviation of 100 hours. What is the probability that a bulb lasts longer than the advertised figure? Probability =

Q: Infant birth weights are normally distributed with a mean of 8 pounds and a standard deviation of…

A: Answer: As per the given data, Let X represent infant birth weights Here X is normally distributed…

Q: The length of human pregnancies from conception to birth approximates a normal distribution with a…

A: Let X be length of time marks the longest 2.16 % of all pregnancies from normal distribution with…

Q: s of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15…

A: Given that Lengths of pregnancies are normally distributed. Mean (μ) = 268 days Standard deviation…

Q: UPPOSE THE LIFETIMES OF TV TUBES ARE NORMALLY DISTRIBUTED WITH A STANDARD DEVIATION OF 1.1 YEARS.…

A: GIVEN DATA : lifetimes of TV tubes are normally distributed with a standard deviation of 1.1 years…

Q: The time it takes for a statistics professor to mark a single midterm test is normally distributed…

A: Obtain the probability that he needs more than 5 hours to mark all of the midterm tests.   The…

Q: What is the standard deviation on the graph ?

A:

Q: Scores on a history test have average of 55 with standard deviation of 10. What is the probability a…

A:

Q: Scores for a standardized test are normally distributed with a mean of 1200 and a standard…

A: given data μ = 1200σ = 60 normal distributionn = 64P(1200<x¯<1214) = ?

Q: A distribution consists of three requencies 250, 300, 350 having neans 30, 15 and 20 and standard…

A: We have given that  Size N1=250 , N2=300, N3=350 Sample mean xbar1 =30 , x2=15 , x3=20 Standard…

Q: Tiger Woods hits an average driver 287.2 yards with a standard deviation of 24.6 yards. What is the…

A: The probability value is calculate by means of standard normal variate with the random variable,…

Q: Working in the garden pulling weeds/planting flowers burns an average of 200 calories per hour. If…

A: It is given that  Mean, μ = 200 Standard deviation, σ = 9 Z-Score, Z = ( X - μ )/σ

Q: The life of a component is normally distributed with mean 800 days and standard deviation 100 days.…

A:

Q: Find the indicated probability. The lengths of humpback whales' pregnancies are normally…

A: x = length of human pregnancies Mean μ = 330 standard deviation (σ) = 25

Q: Glucose levels in patients free of diabetes are assumed to follow a normal distribution with a mean…

A: Given , Mean ( μ ) = 111 standard deviation (σ)  = 10.

Q: The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000…

A: It is given that  Mean, μ = 7000 Standard deviation, σ = 600 Z-Score, Z = ( X - μ )/σ   Note:…

Q: The duration of an NBA basketball game during the 2019-20 season is normally distributed with the…

A:

Q: The Coffee Bean and Tea Leaf morning customer load follows a normal distribution with mean 46 and…

A: Solution

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

A: Let us denote X=the length of pregnancy    X follows a normal distribution with mean=268 and…

Q: The amount of time students study for an exam follows a normal model with a mean of 6 hours and a…

A:

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: The lifetime of lightbulbs that are advertised to last for 3500 hours are normally distributed with…

A:

Q: The amount of snowfall falling in a certain mountain range is normally distributed with 80 inches…

A: Let x¯ denotes the mean annual snow falling during 25 randomly picked years. The mean is 80, and…

Q: The mean age that cats get adopted at a shelter is 21.4 months with a standard deviation of 3.6…

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

Q: Adult Golden Retrievers have a mean weight of 64 pounds with a standard deviation of 8 pounds. If…

A: In this scenario, it is known that the  mean weight is 64 pounds with a corresponding standard…

Q: A tire company makes tires that have a normal distribution with a mean of 65,000 miles with a…

A: Given that Mean= 65000 and standard deviation= 3000

Q: If a golfer hit drives a golf ball with a mean of 180 yards and a standard deviation of 20 yards,…

A: We have given that  A golfer hit drives a golf ball with a mean of 180 yards and a standard…

Q: The time needed to take an exam is normally distributed with an average of 120 minutes and a…

A: Given,mean(μ)=120standard devition(σ)=20

Q: The driving distance to work for residents of a community is has a mean of 21 miles and a standard…

A: The objective here is to find the probability that individual drives between 10 and 20 miles to…

Q: he number of customers at a coffee shop per day follows a normal distribution with a mean of 3,500…

A: given data, normal distributionμ=3500σ=250probability that the coffee shop will serve more than…

Q: The line width for semiconductor manufacturing is assumed to be normally distributed with a mean of…

A: Given Data Population Mean,μ = 0.45 Population Standard Deviation,σ = 0.05

Q: College students average 8.4 hours of sleep per night with a standard deviation of 35 minutes. If…

A:

Q: The amounts of time students study for an exam follows a normal model with a mean of 6 hours and a…

A: Obtain the standard z-score for the random variable X equals 3.5. The standard z-score for the…

Q: The amount of time people spend at the gym follows a uniform distribution from 45 to 90 minutes.…

A:

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 song-length of tunes in the Big Hair playlist of a Statistics professor's mp3-player varies from…

A: