MC Qu. 82 A design engineer wants to construct a sample... A design engineer wants to construct a sample mean chart for controlling the service life of a halogen headlamp his company produces. He knows from numerous previous samples that this service life is normally distributed with a mean of 500 hours and a standard deviation of 20 hours. On three recent production batches, he tested service life on random samples of four headlamps, with these results: Sample Service Life (hours) 1 495 500 505 500 2 525 515 505 515 3 470 480 460 470If he uses upper and lower control limits of 520 and 480 hours, what is his risk (alpha) of concluding servicelife is out of control when it is actually under control (Type I error)? A. 0.0026B. 0.0456C. 0.3174D. 0.6826E. 0.9544

Answers

Answer 1

Answer:

B) 0.0456

Explanation:

It is given that :

Rationale :

UCL = 480

LCL = 480

∴ Mean , [tex]$\bar X = 500$[/tex]

The standard deviation of sample (Sn) = 11.55

Z (for UCL) [tex]$=\frac{\text{UCL - Mean}}{\text{Sn}}$[/tex]

                  [tex]$=\frac{520-500}{10}$[/tex]

                  = 2

Similarly,

Z (for LCL) [tex]$=\frac{\text{LCL - Mean}}{\text{Sn}}$[/tex]

                  [tex]$=\frac{480-500}{10}$[/tex]

                  = -2

Now using the z table for finding the confidence level between Z value of -2 and 2.

Confidence level = 0.4772 + 0.4772

                             = 0.9544

Risk (alpha) = 1 - confidence level

                   = 1 - 0.9544

                   = 0.0456


Related Questions

Sally's mass on Earth is 50 kg. What is her mass on the moon?

Answers

Answer:

Being that the moon has a gravitational force of 1.622m/s 2, we multiply the object's mass by this quanitity to calculate an object's weight on the moon. So an object or person on the moon would weigh 16.5% its weight on earth. Therefore, a person would be much lighter on the moon. Conversely, a person is 83.5% heavier on earth than on the moon.

Explanation:

does this help

Sally's mass on Moon is: C. 50 kg

Mass is a measure of the amount of matter that an object or a body is typically made up of. The standard unit of measurement for the mass of an object is kilograms (kg).

Regardless of the location of a person, an object at any given time, mass (amount of matter that they're made up of) is always the same i.e constant.

This ultimately implies that, whether you're on the Moon, space, planet Earth or any other place; your mass would always remain the same or constant.

In this scenario, Sally's mass on Earth is 50 kg. Thus, we can deduce that her mass on Moon would be 50 kg.

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A racecar's motion is shown in the graph. If the race car begins moving faster how old a line on the graph change?

A. It would become steeper
B.It would become horizontal
C.It woukd go down instead of up
D.It would go up and then go down​

Answers

It would get steeper because it would take less time for it to go a longer distance

State the Law of Electric Charges in your own words.

Answers

[tex] \\ [/tex]

According to Coulomb, the electric force for charges at rest has the following properties: Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges.

Things that are negatively charged and things that are positively charged pull on (attract) each other. This makes electrons and protons stick together to form atoms. Things that have the same charge push each other away (they repel each other). This is called the Law of Charges.

[tex] \\ [/tex]

Hope It Helps!

what are the examples of non viscous liquid​

Answers

ANSWER

[tex] \\[/tex]

Two isotopes of helium ( helium 3 and helium 4) show superfluidity whem they are liquified by cooling to a very low specific temperature. One isotope of rubidium and lithium posses this property at low temperature.

Hope It Helps!

what is aerobic activities

Answers

Answer:

Aerobic exercise is any type of cardiovascular conditioning. It can include activities like brisk walking, swimming, running, or cycling. You probably know it as “cardio.”

By definition, aerobic exercise means “with oxygen.” Your breathing and heart rate will increase during aerobic activities. Aerobic exercise helps keep your heart, lungs, and circulatory system healthy.

Aerobic exercise differs from anaerobic exercise. Anaerobic exercises, such as weightlifting or sprinting, involve quick bursts of energy. They’re performed at maximum effort for a short time. This is unlike aerobic exercises. You perform aerobic exercises for a sustained period of time.

Explanation:

Aerobic exercise is physical exercise of low to high intensity that depends primarily on the aerobic energy-generating process. "Aerobic" is defined as "relating to, involving, or requiring free oxygen", and refers to the use of oxygen to adequately meet energy demands during exercise via aerobic metabolism

what is the shape of the path traversed by the earth around the sun?

Answers

Answer:

The shape of the path transverse by the Earth around the sun is called an ellipse.

Answer:

The shape of the path transverse by the Earth around the sun is called an ellipse

Explanation:

:)

Below is a diagram of the orbits of the inner planets examine the diagram and answer questions three and four 

Answers

Answer:

C is the answer

Explanation:

Earth is the third planet from the sun

you are cheating on your test, I know

Answer:

C..

Explanation:

I'm not sure about answer...

what are the 3 types of family goals​

Answers

be healthy, nice bond, achieving goals

What is the kinetic energy of a 0.50 KG ball that is traveling at a speed of 40m/s

Answers

Answer:

0.4kj

KE = 1/2 mv2

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s)

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402)

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402 KE = 400 J

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402 KE = 400 JKE = 0.4 KJ

Answer:

K. E = 1/2MV²

K. E = 1/2 x 0.50kg x (40m/s)²

K. E = 1/4kg x 1600m²/s²

K. E = 400

Select the correct answer from each drop-down menu.
Heat always flows from a
place to a
place.

Answers

Low place to a high place I think

Heat always flows through from a higher thermodynamic potential to lower thermodynamic potential.

What is thermodynamics?

It can be defined as the branch of science that deals with the interactions of thermal energy across different system and their surroundings.Thermodynamics does not deal with the rate of energy interaction.The movement of the thermal energy depends on the thermodynamic potential of the respective objects or bodies in which the flow of the thermal energy is involved.

The thermodynamics potential is analogous to the electrical potential what is used to flow the current in the electrical circuit in the similar fashion the temperature gradient is the driving force that is used for the transfer of heat energy from a higher temperature potential to the lower to a temperature potential.
This natural flow of heat is valid only when any external work is not done on the thermodynamic system where transfer of heat taking place .

This principle of heat transfer is not applicable in the case of refrigerator and air-conditioner because in that case some external work is done on the system and is the natural driving force of heat transfer.

Hence,we can say that heat always flows through from a higher thermodynamic potential to lower thermodynamic potential unless until some external prime mover is provided for example in case of air conditioner.

Learn more about the thermodynamics here

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When the distance between two objects doubles, what happens to the gravitational attraction between these two objects?

Answers

Answer:

As indicated by Newton's law of attraction each article or body in the universe draws in every single item towards one another and that power of fascination is straightforwardly relative to the result of their masses and contrarily corresponding to the square of the distance between them.  

The power of gravity between two articles will diminish as the distance between them increments. The two most significant elements influencing the gravitational power between two items are their mass and the distance between their focuses. As mass increments, so does the power of gravity, however an increment in distance mirrors a reverse proportionality, which makes that power decline dramatically.  

At that point by Newton's All inclusive Law of Attractive energy;  

F=GMm/R^2  

Mm= result of the majority  

R=Distance Between the two masses by focus.  

On the off chance that R is multiplied, new force=GMm/(2R)^2  

=GMm/4R^2  

Unique Power/New Force=4/1  

F/4=New Power

Give two example of conditions when two objects (Object A=1 kg and Object B =10 kg) would have the same momentum.

Answers

Answer:

they can have the momentum if only they are been divided by another number to see the difference

1. Why are the outer planets called “gas planets?”

Answers

Answer:

They are also called the gas planets because they consist mainly of hydrogen, or the giant planets because of their size. These planets usually have complicated system of many moons and often even rings of ice and/or dust. There are four Jovian planets in the Solar System: Jupiter, Saturn, Uranus and Neptune.

Answer:

They are also called the gas planets because they consist mainly of hydrogen, or the giant planets because of their size. These planets usually have complicated system of many moons and often even rings of ice and/or dust. There are four Jovian planets in the Solar System: Jupiter, Saturn, Uranus and Neptune.

Explanation:

i hope this helps :)

462.3 cm - 25.74 cm

Answers

Answer:

436.56 centimeters

Explanation:

heart this! My answer is correct, I search it.

Of the following, the greatest gravitational force would occur between
A) a marble and a baseball 5 meters apart .
B) a loaded freighter on the high seas and Earth.
C) the moon and an astronaut standing on the moon.
D) the moon and Earth.

Answers

D most likely because I feel like it’s the only one that makes sense

The greatest gravitational force would occur between the moon and Earth. The correct option is D.

What is Gravitation?

The force of gravity, also known as gravitation, affects every material object in the universe. The force of gravity tends to draw any two objects or particles with nonzero mass toward one another. Gravity operates on objects of all sizes, from subatomic particles to clusters of galaxies.

The two forces, which are equal in strength and move in the opposite direction, pair up to interact with various objects. As a result, the pull of Earth on the Moon is equal to and opposes the pull of the Moon on Earth.

Amongst the given options the greatest force is between the moon and the earth.

Hence, the greatest gravitational force would occur between the moon and Earth. The correct option is D.

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how does electic motor and generator work?​

Answers

Answer:

the answer is below

Explanation:

When an electrical current is applied to the motor, the magnets or windings create a magnetic field that both attracts and repels the rotor, causing it to spin. ... Rather than using electricity to create motion, electric generators in Lethbridge convert mechanical energy into electrical energy.

An electric motor is a machine that transforms electrical energy into mechanical energy.

It is made up of a magnet (typically a permanent magnet) and an electromagnet that are both situated close to each other.

The magnet generates a magnetic field, whereas an electromagnet is created by transmitting an electric current via a wire coil.

A magnetic field is created around the coil when an electric current travels through it. The Lorentz force is exerted on the coil as a result of the interaction between the magnetic fields of the coil and the magnet. This force causes rotational motion in the coil, forcing it to revolve.

An electric generator operates on the electromagnetic induction principle.

It is a device that transforms mechanical energy into electrical energy. A generator's essential components are a wire coil and a magnet (often an electromagnet).

The lines of magnetic force travelling through the coil vary when the coil is rotated inside the magnetic field.

Thus, as defined by Faraday's law of electromagnetic induction, this shift in magnetic flux creates an electromotive force (EMF) or voltage in the coil.

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Alex rides on a bike that starts from rest and accelerates to a speed of 20 m/s in 8 seconds. What is Alex’s acceleration? with steps please

Answers

Answer:

2.5m/s

Explanation:

a = [tex]\frac{(vf - vi)}{t}[/tex]

vf = final velocity = 20m/s

vi = initial velocity = 0m/s (alex is starting "at rest")

a = acceleration =

t = time = 8s

a = [tex]\frac{(20-0)}{8 }[/tex] = 2.5m/s

How would you explain to a 5 year old how to make their hands move to show each type of plate boundary with their hands. Convergent (2 ways to move your hands, to make mountains /to show subduction). Divergent (1 way to move your hands). Transform (1 way to move your hands)? Gosh, my teacher needs 3 paragraphs.

Answers

Answer:

Theirs plenty of ways to move you´re hands. You can make you´re hands wave like the ocean and as well make them move together to create a sound which is called clapping.

You can move your hands by poking your fingers together or you can hide your face by putting your hands on your face. You can also play peek a boo while you hide your face by taking you´re hands off you´re face.

Their is many ways to move your hands, They have big words for it too. The big words would be Convergent, Divergent and Transform.

That´s the many ways to move the hands.

Explanation:

GIMME BRAINLIEST PLZ I TOOK TIME ON THAT I HOPE ITS CORRECT. :))

Question 6 of 10

Which two characteristics make electromagnetic waves effective in

communication?

O A. They carry more energy than visible light.

B. They do not require a medium to carry information.

C. They carry information very quickly.

D. They move faster through matter than through space.

Answers

Answer:

The answer is "Choice B and Choice C".

Explanation:

In this question, the two features, which make electromagnetic waves effective for interaction, which they don't really need a method of travel of data and move information quite fast. The motion among magnetic and electrical forces is generated by electromagnetic radiation. These waves will spread without the need for a source for their movement, and they have high speed and also the electromagnetic waves it has the same frequency as light.

(PLEASE answer ASAP, Will give brainliest)
Coasting along at 7.8m/s, a 60.0kg bicyclist on a 7.00kg bicycle encounters a small hill. If the she coasts uphill until coming to a stop, how high up the hill did she travel? (b) What height would the bike reach if she had gone to the store and had 5.50kg of groceries before coasting up the hill?
Please show your work.

Answers

Answer:

v²=u²+2as

0²=(7.8)²+2×9.8×s

s=60.84/19.6=3.1m she travel 3 .1m high.

weight=m×g=

Weight is best described as
A) an object’s resistance to acceleration.
B) what causes an object to fall.
C) the downward force exerted on objects due to gravity.
D) a force solely dependent on an object’s mass.

Answers

Answer:

d

Explanation:

Answer:

d

Explanation

a force solely dependent on the object’s mass

Move the balloon very close to the wall, but don't touch the wall. Then let go. What happens to the balloon?

Answers

Answer:

it lets out the air inside the balloon and I´m pretty sure it would hit the wall while the air was being let out.

The electrons in the wall repel because of the negatively charged balloon, exposing the positively charged nucleus, allowing the balloon and wall to attract each other. (Electrons repel to the back of the wall).

What is the man’s weight on Mars where the acceleration due to gravity is 3.7 m/s2?

Answers

Answer:

8.14n in mars

Explanation:

gravitational

typhoons without water soon run out of energy.
true or false

Answers

Answer:

true

Explanation:

A car travelling at 10 m/s has 75 kJ of KE. Calculate the car’s mass.

Will give brainliest

Answers

Answer:

[tex]k.e = \frac{1}{2} MV {}^{2} \\ 75 = \frac{1}{2} m10 {}^{2} \\ \frac{75}{100} = \frac{1}{2} m \\ \\ 0.75 \times 2 =m \\ m = 1.5kg[/tex]

the mass of car is 1.5kg

which one isnt a part of he respiratory system?
bronchioles
lungs
bronchi
alveoli
colon

Answers

Answer:

Colon isn't a part of respiratory system

Which shows the correct lens equation?

Answers

Answer:

The inverse of f equals the inverse of d Subscript o Baseline plus the inverse of d Subscript I Baseline.

Explanation:

Explanation:

Answer: The answer is most likely the first one, but I may be wrong.

Explanation:

what is refusing to take part in any activity or behavior that puts your health?

Answers

Answer:

Explanation:

Here are some simple do’s and don’ts for kids who refuse to do work: Don’t just punish. If a child or young adult is struggling with some social or emotional challenges at the moment, a punishment is only going to push them away further. Your punishment will appear as harsh, mean, and uncaring.The patient's failure to keep appointments. Patients make appointments, then cancel them at the last minute, or don't show up at all. From the provider's perspective, that means a window of no income in addition to the fact that the patient isn't getting the help he or she needs. A patient's rude or obnoxious behavior.

hari planted to go abroad. change into negative​

Answers

Answer:

Hari didn't plan to go abroad

Explanation:

Abroad planned to go to hari.

A horizontal pipe of diameter 0.933 m has a smooth constriction to a section of diameter 0.5598 m. The density of oil flowing in the
pipe is 821 kg/m3. If the pressure in the pipe is 7220 N/m2 and in the constricted section is 5415 N/m2, what is the rate at which oil is flowing?

Answer in units of m3/s.

Answers

Answer:s

Explanation:

The answer would most likely be 3479 m3/s
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