subject

Mathematics, 01.03.2021 04:50 adrian08022

The average number of miles (in thousands) that a car's tire will function before needing replacement is 60 and the standard deviation is 16. Suppose that 11 randomly selected tires are tested. Round all answers to 4 decimal places where possible and assume a normal distribution a. What is the distribution of X X NO b. What is the distribution of a?o - N c. If a randomly selected individual tire is tested, find the probability that the number of miles (in thousands) before it will need replacement is between 65.2 and 67.8. d. For the 11 tires tested, find the probability that the average miles (in thousands) before need of replacement is between 65.2 and 67.8. e. For part d), is the assumption that the distribution is normal necessary? No Yes

ansver

Answers: 2

Show answers

Another question on Mathematics

question

Mathematics, 21.06.2019 15:00

Alake near the arctic circle is covered by a 222-meter-thick sheet of ice during the cold winter months. when spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. after 333 weeks, the sheet is only 1.251.251, point, 25 meters thick. let s(t)s(t)s, left parenthesis, t, right parenthesis denote the ice sheet's thickness sss (measured in meters) as a function of time ttt (measured in weeks).

Answers: 1

question

Mathematics, 21.06.2019 17:30

Astudent survey asked: "how tall are you (in inches)? " here's the data: 67, 72, 73, 60, 65, 86, 72, 69, 74 give the five number summary. a. median: 73, mean: 70.89, iqr: 5, min: 60, max: 74 b. 60, 66, 72, 73.5, 86 c. 60, 67, 72, 73, 74 d. 0, 60, 70, 89, 74, 100

Answers: 3

question

Mathematics, 21.06.2019 17:30

Which expression will have the same sum as 3_8 + 1/4?

Answers: 1

question

Mathematics, 21.06.2019 20:30

How do you determine if an ordered pair is a solution to a given equation?

Answers: 1

You know the right answer?

The average number of miles (in thousands) that a car's tire will function before needing replacemen...

Questions

question

Business, 10.12.2019 00:31

(1 pt) the manager of a large apartment complex knows from experience that 90 units will be occupied if the rent is 420 dollars per month. a market su...

question

Social Studies, 10.12.2019 00:31

Precast l-shaped beams and inverted tee beams would require less headroom for a building than precast rectangular beams because the single tee or doub...

question

Mathematics, 10.12.2019 00:31

1. in the first 6 columns i have entered totally random data. therefore, the columns are theoretically independent from each other. thus, any actual c...

question

Social Studies, 10.12.2019 00:31

Which of the following played a part in the development of hebrew religious ideas? select all correct answers. 1 jewish history describes the journey...

question

English, 10.12.2019 00:31

In her play the trials of arabella, briony wrote several lines that are quite ironic in view of the real-life events that later transpire in the film...

question

Engineering, 10.12.2019 00:31

Asteel with a yield stress of 300 mpa is tested under a state of stress where σ2 = σ1/2 and σ3 = 0. what is the stress at which yielding occurs if it...

question

Chemistry, 10.12.2019 00:31

The magnitude of the orbital angular momentum of the electron in a hydrogen atom is observed to increase. according to (a) the bohr model and (b) quan...

question

Mathematics, 10.12.2019 00:31

How long will it take a sample of radioactive substance to decay to half of its original amount, if it decays according to the function a(t) = 350e-0....

question

Mathematics, 10.12.2019 00:31

Acertain marathon has had a wheelchair division since 1977. an interested fan wondered what the difference in averaging winning times is between the w...

question

Business, 10.12.2019 00:31

Ashoe store developed the following estimated regression equation relating sales to inventory investment and advertising expenditures. the data used t...

question

Business, 10.12.2019 00:31

Nicole’s employer, poe corporation, provides her with an automobile allowance of $20,000 every other year. her marginal tax rate is 32 percent. answer...

question

Business, 10.12.2019 00:31

How did president trump react to the two multilateral trade agreements, the trans pacific partnership and the transatlantic trade and investment partn...

question

Business, 10.12.2019 00:31

The dawg corporation has gross income of $2,150,000 not including municipal bond interest of $60,000, and deductions of $850,000. calculate dawg's tax...

question

Physics, 10.12.2019 00:31

Alarge room in a house holds 947 kg of dry air at 33.2°c. a woman opens a window briefly and a cool breeze brings in an additional 62.4 kg of dry air...

question

Medicine, 10.12.2019 00:31

The emt is important because the emt provides medical assistance in the event of a disaster, such as an earthquake or hurricane, that would cause a di...

question

Physics, 10.12.2019 00:31

How much heat must be added to 4.55 kg of copper to change it from a solid at 1358 k to a liquid at 1358 k? latent heat of fusion for copper is lf=20...

question

Business, 10.12.2019 00:31

Find the monthly payment, needed to have a sinking fund accumulate the future value, $16,000. the yearly interest rate is 6.7% and the number of payme...

question

Mathematics, 10.12.2019 00:31

According to the rational root theorem, which statement about f(x)=66x^4-2x^3+11x^2+35 is true?...

question

Biology, 10.12.2019 00:31

The color distribution for a specific population of lizards is 170 blue, 50 turquoise, and 30 green. a. the allele for the color blue is represented b...

question

Computers and Technology, 10.12.2019 00:31

Write an interface, pointingdevice, containing: an abstract method, getxcoord that returns an int an abstract method, getycoord that returns an int a...

More questions: Mathematics Another questions

Questions on the website: 13722363