An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such that it would produce a mean pressure of 5.0 pounds/square inch. It is believed that the valve performs above the specifications. The valve was tested on 6 engines and the mean pressure was 5.4 pounds/square inch with a standard deviation of 0.7. A level of significance of 0.025 will be used. Assume the population distribution is approximately normal. Determine the decision rule for rejecting the null hypothesis. Round your answer to three decimal places.

Answers

Answer 1

Answer:

Do no reject null hypothesis.  

Conclusion:

there is no sufficient statistical evidence at 0.025 level of significance to support the claim.

Step-by-step explanation:

Given that;

mean x" = 5.4

standard deviation σ = 0.7  

n = 6

Null hypothesis H₀ : μ = 5.0  

Alternative hypothesis H₁ : μ > 5.0    

∝ = 0.025    

now,

t = ( 5.4 - 5.0) / ( 0.7/√6) = 0.4 / 0.2857 = 1.4

degree of freedom df = n-1 = 6 - 1 = 5

T critical = 2.571

Therefore; t < T critical,

Do no reject null hypothesis.  

Conclusion:

there is no sufficient statistical evidence at 0.025 level of significance to support the claim.


Related Questions

Steven wants to buy a couch that costs $475. He has already saved $120. He plans to save $25 a week.
Enter a function to represent the amount Steven will have saved in x weeks. Will he have enough to buy
the couch in 10 weeks? Complete the explanation.

Answers

Answer:

f(x)=25x+120. f(10)=370

Answer:

Step-by-step explanation:

f(10)= Which Is 25. This means that he will have saved $250 in 10 weeks. The couch costs $475 whis is $225 more than $250

need help on these math questions. please and thank u

Answers

9514 1404 393

Answer:

  a) x = -3

  b) y = (28/27)x -27

Step-by-step explanation:

a) College street has a slope of 0, so is a horizontal line. 2nd Ave is perpendicular, so is a vertical line, described by an equation of the form ...

  x = constant

For 2nd Ave to intersect the point (-3, 1), the constant must match that x-coordinate. The equation is ...

  x = -3

__

b) Since Ace Rd is perpendicular to Davidson St, its slope will be the opposite reciprocal of the slope of Davidson St. The slope of Ace Rd is ...

  m = -1/(-27/28) = 28/27

Using the point-slope equation for a line, we can model Ace Rd as ...

  y -y1 = m(x -x1)

  y -1 = (28/27)(x -27)

  y = (28/27)x -27

1 ton = 2,000 lbs. Convert 12,000 pounds (lbs) to tons. Please give answer in decimals. tons​

Answers

Answer:

12,000 ibs = 6 ton

divide 12,000 by 2,000 to get this answer

Step-by-step explanation:

so in decimal form is 0.06 ( move two places to left)  

10 minutes is 40% of __________ minutes.

Answers

Answer:

That would be 4 minutes

Step-by-step explanation:

Think of 10 as 100%

1 would be 10

2 would be 20

3 would be 30

And so on and so forth

Hope this helps (:

Answer:

it is 25 40% of 10 is 25

Step-by-step explanation:

you do 10/40%=25.

pls give me brainlyest pls need it

Solve equation by using the quadratic formula.
[x^{2} + 4x = -4

a. x = -2

b. x = -4

c. x = -4, x = 4

d. x = 0, x = 4

Answers

ANSWER IS C because I looked it up

Jerry takes trail mix on hikes. A package of dried apricots weighs 74 ounces. A package of sunflower seeds weighs 60 ounces. Jerry divides the apricots and seeds equally among 8 bags of trail mix.

Answers

i dum please help

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Can someone help me please

Answers

Answer:

38 degrees

Step-by-step explanation:

just know

very easy 5th grade question giving brainliest. look at photo and answer

Answers

Answer: 20 over 4

Step-by-step explanation: me smart

What is the remainder when
12345×54321 is divided by 9?

Answers

Answer:

0

Step-by-step explanation:

there isn't a reminder, you get 670592745

The value of the equation is A = 7,45,10,305 and the remainder is 0

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Let the first number be p = 12345

Let the second number be q = 54321

Now , A = ( p x q ) / 9

Substituting the values in the equation , we get

A = ( 12345 x 54321 ) / 9

On simplifying the equation , we get

A = 67,05,92,745 / 9

On further simplification , we get

A = 7,45,10,305

And , the remainder of the equation is 0

Therefore , the value of A is 7,45,10,305

Hence , the equation is A = 7,45,10,305 and the remainder is zero

To learn more about equations click :

https://brainly.com/question/19297665

#SPJ2

savoy the person i need u 2 answer me!!!

Answers

Answer:

i'm here Mittens

Step-by-step explanation:

so what u doing cutie

Please help, I will give brainliest, I am struggling badly.

Answers

Answer: y = 5/2x - 4

Step-by-step explanation:

the equation is y = ax + b (a ≠ 0)

because the slope of the line is 5/2 => a = 5/2

               the line passes through (0; -4) => -4 = b

=> the equation is y = 5/2.x - 4

Given that f (x) = x^2 - 5x and g (x) x + 4

Answers

1) (x-2)^2
2)-4x(x+5)

pls mark as brainliest:))

What would the graph look like for ^

Answers

Answer: The correct option is the first one.

Step-by-step explanation:

Let's define how to interpret each symbol:

x < a  (x is strictly smaller than a, we graph this with an open circle at a, and an arrow to the left of a)

x > a (x is strictly larger than a, we graph this with an open circle at a, and an arrow to the right of a)

x ≥ a (x is larger than or equal to a, we graph this with a closed circle at a, and an arrow to the right of a)

x ≤ a (x is smaller than or equal to a, we graph this with a closed circle at a, and an arrow to the left of a)

In this case, we have the inequality:

x ≤ 15

Then to graph this we need a closed circle at 15, and an arrow to the left. The correct option is the first one.

Solve for y: 3x + 2y = 5y + 9​

Answers

Answer:

y = x - 3

Step-by-step explanation:

First you want to combine like terms (so get x on one side and y on the other).

2y = 5y + 9 - 3x

-3y = -3x + 9

Then just solve for y by dividing by -3

y = (-3x + 9)/-3

y = x - 3

Not quite sure but pretty sure it’s that’s it’s that it is the answer 3

can someone help me with this please?

Answers

Answer:

3x+6

Step-by-step explanation:

Distributive property is where youre multiplying the inside numbers by the outside number and it cannot be further simplified

Leila and Jo are two partners in a business. Leila makes $2 in profits for every $3 that Jo makes. If Jo makes $18 profit on the first item they sell, how much profit does Leila make?

Answers

Answer:

I think the answer is 12

Step-by-step explanation:

Because Jo made $3 6 times so you multiply that by what Lelia makes. So 2 x 6 = 12?

The probability of rolling a sum of 5 from a pair of dice is. What are your odds in favor of rolling a sum of 5?

Answers

Answer:

1/9

Step-by-step explanation:

Which number label represents the nucleus? O 5 3 O 2​

Answers

5, because that’s the center of the atom.

if you help i will say thank you​

Answers

Answer:

C

Step-by-step explanation:

(5,-4)

Answer:

C

Step-by-step explanation:

(5,-4) by using elimination method

¿De qué manera influye la ética en el hombre a partir de su función crítica? Explique.

Answers

Answer:

La ética es una rama de la filosofía que se ocupa de la reflexión crítica sobre las acciones de los hombres. En un sentido general, la ética busca establecer los criterios para juzgar si una acción puede calificarse de correcta o incorrecta, y para evaluar los motivos y consecuencias de dicha acción. Las cuestiones éticas también juegan un papel importante en la política, los negocios y la medicina, y en campos de la ciencia y el estudio como la historia, la biología y la sociología, la ética de la profesión es ocasionalmente un tema de discusión.

Así, la ética implica una evaluación de las acciones de las personas, calificándolas como correctas o incorrectas a los ojos de la sociedad. De esta manera, influye en la forma en que las personas realizan o dejan de realizar una determinada acción, ya que estas consideran sus consecuencias positivas o negativas al momento de realizarla.  

Stephanie collected maple syrup from some of her trees. From the first set of trees, she collected 2 gallon of syrup. The second

1

and third set of trees yielded 3 gallons each.

Part A: How many gallons of syrup did she collect in all?

Part B: After using some of the syrup she collected for cooking, Stephanie found that she only had a gallons of syrup left. How

much syrup did she use for cooking?

Answers

Answer:

Part A - 8

Part B - 7

Step-by-step explanation:

Part A

She collected 8 gallons of syrup in total. Two gallons from first tree, three gallons from second tree and three gallons from third tree.

Part B

She used seven gallon of syrup for cooking.

She is left with one gallon syrup only out of total eight gallon syrup

Select all that apply. Which of the following name an angle in the drawing? ACB CDE ECB BDA

Answers

There needs to be a picture to get the answer

Answer:

ecb and acb

Step-by-step explanation:

So far this month you have achieved $100.90 in sales which is 50% of your monthly goal l. With 5 more workdays this month, how much do you need to sell each day to reach your goal?

Answers

20.18 per day for 5 days

1) Are p+p+p+p and 3p equivalent? ​

Answers

Answer:

no!

Step-by-step explanation:

each p has an "invisible" 1, so it'd be 1p + 1p + 1p + 1p = 4p, not 3p

Q1)
Find each portion when you share $12 in the ratio:
1:2

Answers

Answer:

Step-by-step explanation:

1+2 = 3

12/3 = 4

so for the "1" you get 4

for the "2" you get 8

simplify the fraction completly
75/100

Answers

The simplest form for 75/100 is 3/4
It’s 3/4. Mark me brainiest if I’m right plz

A bag contains 10 red marbles .15 yellow marbles, 5 Green marbles and 20 blue marbles. Five marbles are drawn from the bag. what is the approximate probability that exactly 2 of the five are blue?

Answers

Answer:

c

Step-by-step explanation:

A tree grows at a rate of 30 cm per year. If the tree is 5 meters tall
now, how tall will it be in 4 years?
Hint: Find the relationship between centimeters and and meters.

Answers

Answer:

Step-by-step explanation:

30 cm per year

now the tree is 5m

in 4 years the tree grew 4*30=120cm=1m 20 cm

the tree is 5+1.20 cm=6.20m tall

Write the decimal as a percent.
3.68=%

Answers

Answer:

Step-by-step explanation:3.68 = 368%

X-8-3X-10
Use distributive property

Answers

Answer:

5x-10

Step-by-step explanation:

8x-3x-10

first you subtract 3from 8 and get 5 just add the x so your left with 10

Answer:

-2(x+9)

Step-by-step explanation:

x-8-3x-10

-4x-18

-2(x+9)

Hope it helps you

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