The average number of miles (in thousands) that a car's tire will function before needing replacement is 69 and the standard deviation is 12. Suppose that 47 randomly selected tires are tested. Round all answers to 4 decimal places where possible and assume a normal distribution.   d)for the 47 tires tested, find the probability that the average miles (in thousands)before need of replacement is between 68.1 and 70.1 E)NFor part d), is the assumption that the distribution is normal necessary? No OR Yes

Q: The average number of moves a person makes in his or her lifetime is 12 and the standard deviation…

A: We have given that                                     Mean(µ) = 12 Standard deviations (σ) = 3.4X…

Q: Assume that females have pulse rates that are normally distributed with a mean of μ=72.0 beats per…

A: Given X is normal Distributed with mean µ = 72.0 and standard deviation σ = 12.5 now will using…

Q: A variable xx is normally distributed with mean 15 and standard deviation 7. Round your answers to…

A: For standard normal random variable, Mean (µ) = 15 Standard deviation (σ) = 7 X~N (15, 7)

Q: Assume that females have pulse rates that are normally distributed with a mean of u = 73.0 beats per…

A:

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 73…

A: Given: X = the amount of time that person spent at Grover Hot Springs  X follows normal distribution…

Q: The chemical concentration of a particular chemical in a lake is to be measured. Assume it is known…

A: We have to find given probability.

Q: 9??

A: Step 1: Find the proportion less than 172 days First find the z-score:z=3.5172−175​=−0.85714 Use…

Q: a. If 1 adult female is randomly selected, find the probability that her pulse rate is between 68…

A: Here given that female pulse rate is normally distributed with mean 74bpm and standard deviation…

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

A: Let us consider X is a random variable that denotes the length of life of the light bulb which is…

Q: The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which…

A: Let X be the random variable denote the maximum oxygen  uptake for athletes  It is clearly given…

Q: Assume that females have pulse rates that are normally distributed with a mean of u = 75.0 beats per…

A: Given that, Females have pulse rates that are normally distributed with, Mean = 75.0 Standard…

Q: Assume that females have pulse rates that are normally distributed with a mean of μ=73.0 beats per…

A: It is given that the mean and standard deviation are 73.0 and 12.5, respectively.

Q: Assume that females have pulse rates that are normally distributed with a mean of u = 74.0 beats per…

A: The mean is 74 and the standard deviation is 12.5.

Q: The average number of miles (in thousands) that a car's tire will function before needing…

A: b.   It is given that the number of miles that a car tire will function before replacement has a…

Q: College professors nationwide have a mean age of 48.2, distributed normally, with a standard…

A:

Q: Females have pulse rates that are normally distributed with a mean of μ=76.0 beats per minute and a…

A: Let X be a continuous random variable of pulse rates of females (beats per minute) is normally​…

Q: The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 38…

A: Answer: From the given data, mean(μ) = 38 Standard deviation(σ) = 15 X~Normal distribution(38,15)

Q: ..... a. If 1 adult female is randomly selected, find the probability that her pulse rate is less…

A:

Q: The average lifetime of smoke detectors that a company manufactures is  5 years, or 60 months, and…

A: Given : μ = 60 , σ= 8 and n= 31 By Central Limit Theorem, x̅ follows a Normal distribution with…

Q: Solve for B) 23.787 and 35.213 were wrong

A: Population mean, Sample size, Sample mean, Sample standard deviation, Confidence level,

Q: Assume that females have pulse rates that are normally distributed with a mean of u= 76.0 beats per…

A: Reviewing information, X : Pulse rates of females per minute X~Nμ=76,σ=12.5

Q: Assume that mass of people has a mean of 69 kg and a standard deviation of 16 kg. A large lift has a…

A:

Q: The scores on a test for children in an eighth grade class is normally distributed with a mean of 70…

A:

Q: b) Determine the zz-score for x=20x=20. z=z= c) What value of xx has a zz-score of 11? x=x= d)…

A:

Q: Assume the machine shifts and the distribution of the amount of the compound added now has a mean of…

A: Let  X be the new  mean of the  vile selected  μ is the original population mean  S is the standard…

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

A:

Q: The length of pregnancy are normally distributed with a mean of 268 days and a standard deviation of…

A: From the provided information, Mean (µ) = 268 days Standard deviation (σ) = 15 days Let X be a…

Q: The amount of syrup that people put on their pancakes is normally distributed with mean 61 mL and…

A: Let X is the amount of people put the amount of syrup on their pancakes and it follows normal…

Q: A variable xx is normally distributed with mean 15 and standard deviation 7. Round your answers to…

A:

Q: The average number of moves a person makes in his or her lifetime is 12 and the standard deviation…

A:

Q: a) Determine the zz-score for x=26x=26. z=z= b) Determine the zz-score for x=15x=15. z=z= c) What…

A: We have given that  Mean, μ = 21 Standard deviation, σ = 3 Z-Score, z = ( X - μ )/σ   Note:…

Q: A study found that highway drivers in one state traveled at an average speed eft 64 1 mles per hour…

A: GivenMean(μ)=64.1standard deviation(σ)=6.9sample size(n)=30

Q: Assume that the amount of weight that male college students gain during their freshman year are…

A: NNote: this probability value calculated from standard normal distribution table

Q: Assume that females have pulse rates that are normally distributed with a mean of u = 73.0 beats per…

A: According to the given information, we have Mean = 73 Standard deviation = 12.5 Sample size, n = 25

Q: The average annual rainfall in Detroit is 52.1" of rain per year with a standard deviation of 10"…

A: Given  μ=52.1σ=10 a) P(X>75)=P(X-μσ>75-μσ)                =P(z>75-52.110)…

Q: The mean height of an adult giraffe is 18 feet. Suppose that the distribution is normally…

A:

Q: Assume that weights of adult females are normally distributed with a mean of 79 kg and a standard…

A: For the distribution of the weight (in kg) of adult females, it is given that: The mean, μ=79 The…

Q: The weight of a green forest frog has a normal distribution with mean 150.3 g and a standard…

A:

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

A: a. It is given that the heights of women follow normal distribution with mean 63.6 inches and…

Q: Assume that females have pulse rates that are normally distributed with a mean of μ=76.0 beats per…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.