The average lifespan of a set of tires is 38,000 miles, with a standard deviation of 1500 miles. What is the probability that the lifespan of a set of tires will be between 32,000 miles and 44,000 miles? A) 0.9375

Q: Assume that women's heights are normally distrubuted with a mean of 63.6 inches and a standard…

A: From the given information, the mean is 63.6 and the standard deviation is 2.5.

Q: A livestock company reports that the mean weight of a group of young steers is 1156 pounds with a…

A: The use of standard normal probability distribution tables help us in ascertaining percentage of…

Q: Assume that the heights of women are normally distributed with a mean of 64.1 inches And a standard…

A: Given: Population mean=μ=64.1. Population standard deviation=σ=2.3. The sample size is n=64.

Q: Five hundred children participated in a field demonstration. Their heights averaged 110cm with a…

A:

Q: According to the Current Results website, the state of California has a mean annual rainfall of 23…

A: Concept of sampling distribution of sample mean: Let a particular characteristic of a population is…

Q: The average number of acres burned by forest and range fires in large New Mexico county is 4,300…

A: GivenMean(μ)=4300standard deviation(σ)=750

Q: A population has a mean of 200 and a standard deviation of 25. A sample of 64 observations will be…

A: We have to find out given probabiity..

Q: SAT exam scores are normally distributed with mean 500 and standard deviation 100.  Give the…

A: Let X= SAT exam score  Given that X follows normal distribution with mean=500 and standard deviation…

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: 7c

A: as you say i give only 7c answer

Q: The mean monthly household electric bill in a certain community is $110. Assume the amounts are…

A: Suppose the random variable x defines the monthly household electric bill in a certain community.

Q: Assume that the duration of human pregnancies can be described by a normal model with mean 269 days…

A:

Q: Assume that the salaries of elementary school teachers are normally distributed with a mean $35,000…

A:

Q: The service time for customers coming through a checkout counter has mean 128 seconds and standard…

A: Let, X=The service time for customers coming through a check out counter Given that X follows a…

Q: Billiard tables have mean degree of balance 0 and standard deviation 1. What is the probability…

A: It is given that the degree of balance is normally distributed with mean 0 and standard deviation is…

Q: iven a normal population whose mean is 580 and whose standard deviation is 77, find each of the…

A: Given that μ=580,σ=77

Q: A voin is tossed four times. Let x denote the number of heads. Find the mean and standard deviation…

A: A coin is tossed four times. The  denotes the number of heads.

Q: Cattle The Virginia Cooperative Extension reportsthat the mean weight of yearling Angus steers…

A: The mean and the standard deviation are 1,152 and 84 pounds, respectively.

Q: The average life of a car tire is 50,000 miles. The standard deviation is 2,000 miles. а.) Draw and…

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

Q: The owner of a computer repair shop has determined that their daily revenue has mean $7200 and…

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: If X is a number on standard dice roll, find the standard deviation (o) of X.

A: The random variable is a number on a standard dice roll.If a standard die is rolled, then its…

Q: Iniversity and college students average 7.2 hours of sleep per night, with a standard eviation of 40…

A:

Q: The average age of accountants is 43 years, with a standard deviation of 5 years. If an accounting…

A: From the given information,   Mean = 43 Standard deviation = 5 Sample size = 30

Q: a) What is the mean speed now? What is the new standard deviation? The new mean would be mph. The…

A:

Q: The average score of all golfers for a particular course has a mean of 75 and a standard deviation…

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: Suppose that the blood alcohol content of students who drink five beers varies from student to…

A: The mean and standard deviation are 0.07 and 0.01.

Q: The average person uses 130 gallons of water daily. If the standard deviation is 35 gallons , find…

A: Given that, Mean = 130 Standard deviation = 35 Sample size = 25

Q: a normal population has a mean of 28 and a standard deviation of 5. what proportion of the…

A: It is given that mean and standard deviation are 28 and 5, respectively.

Q: Human body temperatures have a mean of 98.4ºF and a standard deviation of 0.5ºF. Convert the…

A:

Q: find the probability that he can fit through the doorway without bending.

A:

Q: The length of time taken to complete a particular task on a construction site is found to be…

A:

Q: The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget…

A: Solution Given that, The Acme Company manufactures widgets. The distribution of widget weights is…

Q: 35) The mean score of a college entrance test is 500, the standard deviation is 75. The score…

A: Mean(μ)=500 standard deviation(σ)=75

Q: . If the probability of a defective bolt is 0.1, find (a) the mean (b) the standard deviation for…

A:

Q: The NJ Department of Health has reported the average life span of NJ residents is 81 years. If the…

A: Let "X" be the average life span of NJ residents