3. The Flamerock npany manufactures a particular tire model that has a mean lifetime of 65,000 miles with a standard deviation of 4500 miles. The lifetimes are normally distributed. What is the probability hat one of these tires selected at random will last 70,000 miles or more?

Q: The average expenses of the Dela Cruz Family is ₱12,600 every half of a month with a standard…

A: Given data,μ=12600σ=1570P(X<11000)=?

Q: According to a mashable.com post, time spent on Tumblr, a microblogging platform and social…

A: Consider X be the random variable defined as the time spent on Tumbler per visit, which is normally…

Q: Suppose that the body lengths of adult male crested porcupines in a certain region in Italy are…

A:

Q: 10. An education finance corporation claims that the average credit card debts carried by…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 10.6…

A: Obtain the Z-score for the random variable X equals 8.9. The Z-score for the random variable X…

Q: Of all the companies on the New York Stock Exchange, profits are normally distributed with a mean of…

A: Given data: Mean = $6.54 million Standard deviation = $10.45 million Sample size  = 73 To find: what…

Q: Q/The speed of a file transfer from a company server to any employee personal  computer is normally…

A:

Q: Suppose the grades in a finite mathematics class are normally distributed with a mean of 75 and a…

A: Given Data: The mean of the distribution is: μ=75 The standard deviation of the distribution is: σ=5…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 13.5…

A: Let "X" be the length of the items.

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

A:

Q: 3. The average cholesterol content of a certain canned goods is 215 milligrams, and the standard…

A: Given that  X~N(μ= 215 , σ= 15 ) μ= 215 , σ= 15 , n= 25

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 14.7…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 18.8…

A: The probability that it is less than 18.8 inches long when one item chosen at random is obtained…

Q: In a certain geographical region, the annual rainfall is normally distributed with a mean of 102.2…

A:

Q: 4. The average public elementary school has 468 students with a standard deviation of 87. If a…

A: Here use given step by step solution and normal distribution of sample mean

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 13.9…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 17.7…

A: consider the test statistics z=x-μσn where μ is the mean, σ is the standard deviation, n is the…

Q: 1. In a study of the life expectancy of 500 people in a certain geographic region, the mean age at…

A:

Q: Suppose that the weights of the people in a certain office building are normally distributed, with a…

A: Given  μ=150, σ=20, n=16  Note: This probability value calculated from standard normal distribution…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 18.2…

A:

Q: 4 An LED lightbulb manufacturer produces lights with a mean lifespan of 10,000 hours and a standard…

A: Given information- Population mean µ = 10,000 hours Population standard deviation, σ = 1,000 hours…

Q: 2. An electronic company in laguna manufactures resisters that have aean resistance of 120 ohms and…

A: Given that: Mean resistance: μ=120Ω Standard deviation: σ=13Ω Random sample: n=40 For : Px>114

Q: 4. The monthly utility bills in a city are normally distributed with a mean of $100 and a standard…

A: It is given that the mean is 100 and standard deviation is 12.

Q: The shape of the distribution of the time required to get an oil change at a 15 minute oil change…

A: Here we have μ = 16.2 min and Std (s) = 3.7min

Q: A factory manufactured PVC pipes with a mean diameter of 3.4 cm, a standard deviation of 1.7 cm and…

A: Note: Hi there! Thank you for posting the question. As there are several independent questions,…

Q: 5. The average salary of bank managers in a certain city is $91,900 pesos per hour with a standard…

A: Let X be the random variable from normal distribution with average or mean (μ) = $91900 and standard…

Q: 1.A study of the amounts of time (in hours) college freshmen study each week found that the mean is…

A:

Q: 9) For a certain type of computer, the length of time between charges of the battery is normally…

A:

Q: 2. The average age of a car registered in the Land Transportation Office (LTO) is 10 years, or 120…

A: Solution: Given information: n= 35 Sample size  μ= 120 months Population mean σ= 20 months…

Q: Suppose that the lifetimes of light bubs are approximately normaily dstributed, with a mean of 56…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 12.6…

A: Mean = 12.6 Standard deviation = 1.9

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 19.3…

A: Given information: A manufacturer knows that the length of its items are normally distributed…

Q: 1. Suppose the mean life span of a randomly selected Chihuahua dog is normally distributed with a…

A: Solution

Q: Suppose the heights of 18 year old men are approximately normally diatributed, with mean 67 inches…

A: Mean = 67 Standard deviation = 5

Q: Suppose that the starting salaries of MBAS at Wilfrid Laurier University (WLU) are normally…

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Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.3 inches,…

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Q: Suppose the heights of 18-year-old men are approximately normally distributed, with mean 66 inches…

A: Let "x" be the heights of 18-year-old men. Draw the normal curve and shade the area between…

Q: If the average person adds 27 pounds of glass to recycle per year, with a standard deviation of 3,…

A: Mean (µ) = 27 Standard Deviation (σ) = 3 Sample size (n) = 20 Probability that the sample mean…

Q: Suppose the body length of a certain species is normally distributed with mean 39.8 in and standard…

A: GivenMean(μ)=39.8standard deviation(σ)=2.05

Q: Suppose that the number of gallons of milk sold per day at a local supermarket are normally…

A: Let X denote the number of gallons of milk sold per day. X ~ N(424.7,460.9609)

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 20 inches,…

A: Determine the Z score for the random variable X equals 23.1., The Z score for the random variable X…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.6 inches,…

A: Since you have posted more than one question  we have solved the first question for you.  For…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.6 inches,…

A: GivenMean(μ)=9.6standard deviation(σ)=2.8

Q: 4. The monthly utility bills in a city are normally distributed with a mean of $100 and a standard…

A: (4) Obtain the standard z-score for the random variable X equals 90. The standard z-score for the…

Q: Suppose that the starting salaries of MBAs at Wilfrid Laurier University (WLU) are normally…

A: Given the data MBA's at WPUNJ MBA's at Rutgers Mean μ1=62000 Mean μ2=60000 SD, σ1= 14500 SD,…

Q: 6. Suppose that the average outstanding credit card balance for young professionals is 11,200 with a…

A: Given : The average outstanding credit card balance i.e. μ=11200 Standard deviation i.e. σ=2600…

Q: Suppose that in a certain large city, the mean 100 meter dash time for male high school seniors was…

A: Given that: X is normally Distributed with mean µ = 13.3 and standard deviation σ = 1.9 By using…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 13.4…

A:

Q: Suppose that an airline uses a seat width of 16.3 in. Assume men have hip breadths that are normally…

A: It is given that the mean is 14.5 and standard deviation is 11.