Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below. The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages. (a) At the .01 level of significance, is the true mean greater than 10? (b) Use Excel to find the right-tail p-value.

Answers

Answer 1

Answer:

a) The calculated value   t =  5.903 > 2.572 at 0.01 level of significance

Null hypothesis is rejected at 0.01 level of significance

There is a true mean value is less than 10

b) p - value  0.00001

The p - value 0.00001  < 0.01

The result is significant at p<0.01

Step-by-step explanation:

Step(i):-

Given mean of the population = 10

Sample size 'n'= 35

Mean of the sample x⁻ = 14.44

Standard deviation of the sample 's' = 4.45

Level of significance ∝ = 0.01

Step(ii):-

Null Hypothesis H₀ : μ >10

Alternative Hypothesis : H₁ : μ < 10

Test statistic

                 [tex]t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }[/tex]

                [tex]t = \frac{14.44-10}{\frac{4.45}{\sqrt{35} } }[/tex]

               t =  5.903

Degrees of freedom = n-1 = 35-1 = 34

tabulated value t₀.₀₁,₃₄  = 2.572

The calculated value   t =  5.903 > 2.572 at 0.01 level of significance

Null hypothesis is rejected at 0.01 level of significance

There is a true mean value is less than 10

p- value :

p - value  0.00001

The p - value 0.00001  < 0.01

The result is significant at p<0.01


Related Questions

Which areas of your body are most flexible

Answers

Answer:

muscular area of body are most flexible

answer: tongue

(mainly made of skeletal muscle.)

im doing a review for my class I've blurred my name but im struggling getting to understand some of these

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Wait wait wait wait ayee ayee wooooo

What is the perimeter of a rectangle if the length is (3x + 2) and the width is (2x - 5)

Answers

Answer: 10x-6

Step-by-step explanation:

we know that perimeter P is 2L+2W

2L= 2(3x+2)=6x+4

2W=2(2x-5)=4x-10

P=6x+4+4x-10=10x-6

please help me asap
This graph shows a proportional relationship.

What is the constant of proportionality?

Enter your answer as a ratio in simplified form by filling in the boxes.

Answers

Answer:

yes

Step-by-step explanation:

it's right i think i hel8

PLS ANSWER!!!!!!!!!!!! Mrs. Cardona has 23 of a pan of lasagna left. She wants to divide it into 6 equal pieces for her family. What part of the original pan of lasagna will each person get? Make sure to put your fraction in simplest form.

Answers

Answer:

1/9 pan of lasagna

Step-by-step explanation:

Answer:

3 5/6

Step-by-step explanation:

Divide 23 and 6 and then it gives u 3 5/6

can someone help me find the Y-intercept to the graph

Answers

Answer:

-6

Step-by-step explanation:

-6 because its where it interests on the y line

A pitcher coming back from an injury limits the number of pitches thrown in bull pen sessions as shown.

a. Which quantities are proportional?

b. How many pitches that are not curveballs do you think the pitcher will throw in Session 5?

Answers

Answer:

a.  all of the above are correct

b.  The pitcher will throw 30 pitches that are not curveballs.

Step-by-step explanation:

how many nickels are in 126 dollars

Answers

Answer:

2,520 nickles in $126

Step-by-step explanation:

126 dollars x 100 cents

= 12,600 cents

then

12,600 cents / 5 cents

= 2,520 nickels

(The upcoming and this sentence is pre-written and copy and pasted in every brainly question or comment I write or answer.) If this answer helped you please consider giving it brainliest. If my answer was wrong and you got marked wrong for it, I deeply apologize and hope you will forgive me, since everyone makes mistakes sometimes. If you need me to elaborate on my answer or give further explanation on it, please ask and I will do so. If you need to explain your reasoning on your work feel free to use my words- word for word- without crediting me, the answer was made for you anyways! Hope yall learn from my answer and it helps you in the future with assignments, quizzes, test’s, and more!

- •Trix•

( Yes I know my - •Trix• thingy is not my user but it’s what I would change it to if I could but I can't, please address me as Trix while commenting or talking to me here.)

Answer:

2,520 nickels

Step-by-step explanation:

here i will show you how many nickels are in 126$.

first we will calculate how many cents are in 126$.

126x100, and then divide the result by 5 cents to get the answer.

here is the math to illustrate better

126$ x 100 cents

=12,600

12,600 cents / 5 cents

=2,520

there for the answer to your question "how many nickels are in 126 dollars" is as it follows:

                        2,520 nickels

Solve for 'p'. Show all work: 2(-4x + 8) ≤ 20

Answers

Answer: Answer:  x≥  −1 /2

Step-by-step explanation:

Answer:

x ≥ -1/2 or x ∈ [-1/2, +∞)

Step-by-step explanation:

2(-4x + 8) ≤ 20

divide both sides by 2

-4x + 8 ≤ 10

move 8 to the right

-4x ≤ 10-8

-4x ≤ 2

divide both sides by -4. Flip the sign since a negative value is being divided

x ≥ - 1/2

Match the vocabulary word with the correct definition.
3
1. apothem
2. inscribed polygon
a polygon that is constructed inside
of the circumference of a circle in which
the vertices of the polygon lie on the
circumference of the circle.
2
a line segment drawn from the
center of a convex polygon (inscribed in
a circle) to the midpoint of any side of
the polygon.
a convex polygon in which all of the
side lengths are equal and all of the
interior angles have equal measure.
3. regular polygon

Answers

Answer:

apothem: a line segment drawn from the center of a convex polygon (inscribed in a circle) to the midpoint of any side of the polygon.

regular polygon:a convex polygon in which all of the side lengths are equal and all of the interior angles have equal measure.

inscribed polygon:a polygon that is constructed inside of the circumference of a circle in which the vertices of the polygon lie on the circumference of the circle.

Step-by-step explanation:

The words that matched with the correct definition are given below.

What is apothem?

The apothem is the angle between a chord's middle and the circle's center. The apothem of a regular polygon is only the in radius, or the distance from the center to a side.

The correct definitions are:

Apothem : a line segment drawn from the center of a convex polygon (inscribed in a circle) to the midpoint of any side of the polygon.

Regular polygon : a convex polygon in which all the side lengths are equal and all the interior angles have equal measure.

Inscribed polygon : a polygon that is constructed inside the circumference of a circle, in which the vertices of the polygon lie on the circumference of the circle.

Therefore, the correct definitions are given above.

To learn more about the apothem;

https://brainly.com/question/9172186

#SPJ2

Which of the following has the greatest value? *
5/12
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Answers

Answer:

3/5

Step-by-step explanation:

You'll get 0.6 if you divide it

Answer:

3/5

Step-by-step explanation:

5/12 = 0.41666

4/9 = 0.4444

3/7 = 0.4285714

7/13 = 0.538461

3/5 = 0.6

9. Carson bought 0.6 pounds of lima beans. If lima beans cost $0.70 a pound, how much
did he spend?



Please help

Answers

he spent $0.42 :)
what i did to solve it is i found out that 0.1 of a pound costs $0.07 so i multiplied it by 6, hope this helped

You had to take your computer to the shop. The technician charges a flat rate of $50 for looking at your computer and $25 an hour to fix the problem. Create an equation where prepresents how much you will have to pay and his the number of hours it takes to get your computer fixed.

Answers

Answer:

A = 50 + 25h

Step-by-step explanation:

You had to take your computer to the shop. The technician charges a flat rate of $50 for looking at your computer and $25 an hour to fix the problem. Create an equation where prepresents how much you will have to pay and his the number of hours it takes to get your computer fixed.

Let the number of hours required to fix the laptop be represented by h

Total Amount required to pay = A

Hence,the Equation is given as:

A = $50 + $25 × h

A = 50 + 25h

Who is good at math? Need help.

Answers

Answer:

hi

Step-by-step explanation:

i'm excellent, i could help

Same here :) I can help if you still need it

Draw the image of ABC△ under a translation by 5 units to the left.

Answers

If triangle ABC is translated 5 units to the left, the transformation is given by (x, y) ⇒ (x - 5, y)

What is transformation?

Transformation is the movement of a point from its initial location to a new location. Types of transformation are reflection, rotation, translation and dilation.

Translation is the movement of a point either up, down, left or right.

If triangle ABC is translated 5 units to the left, the transformation is given by (x, y) ⇒ (x - 5, y)

Find out more on transformation at: https://brainly.com/question/1620969

what is the percent decrease from 200 to 20

Answers

Answer: 90%

Step-by-step explanation: if 200 to 10 is a 95% decrease, a 200 to 20 is a 90% change.

What is the value of 3 in 384?
Please explain?!

Answers

Answer:uhhhhh 300

Step-by-step explanation:

I don’t really need to explain bc all u need to do is take the 80 and 4 away and u have only 300

you have a recipe that indicates to use 2 parts of milk for every 7 parts of flour. You use 8 cups of milk. How much flour do you need?

Answers

Answer:

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Step-by-step explanation:

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Answers

the answer is 2.50 ..

please help ASAP
A)1,000 units;$1300
B)3,000 units; $100
C)1,000 units; $600
D)2,000 units; $1100

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Answer:

B

Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

What is the answer to this question?

Answers

Answer: Choice A) 4, 3, 5, 1, 2

=====================================================

Explanation:

Since tan(x) = sin(x)/cos(x) is a known and widely used trig identity, this must mean step 4 goes first.

The answer is between choice A and choice B.

The question is now: What is the correct second step?

It's either step 3 (choice A) or step 5 (choice B)

It turns out that step 3 is the correct statement after step 4. The sin(2x) breaks up into 2sin(x)cos(x), while the cos(2x) breaks up into cos^2(x)-sin^2(x). There are three different variations for the cos(2x) and this just happens to be one of them.

So we can rule out choice B and go with choice A as the final answer.

In a fruit cocktail, for every 30 ml of orange juice you need 45 ml of apple juice and 25 ml of coconut milk. What proportion of the cocktail is orange juice? Give your answer as a fraction in its simplest form.

Answers

Pretty sure it’s 3/10
I’m not positive though

my name is gabe itch

Answers

i’m weak lol i’m commenting for points

please help and explain ASAP !!
[IMAGE]

Answers

Answer:

I did the solution there I hope it helps

The cost C (in dollars) for a company to produce and sell x thousand gadgets is given by C = 1/40 x^2 − 2x + 4040



(a) What is the company's start-up cost? $________


(b) What is the minimum cost? $ ___________


(c) How many gadgets must the company produce and sell in order to incur the least cost? (Be careful with your units!) __________ gadgets

Answers

Answer:

Step-by-step explanation:

(c) The number of gadgets the company must produce and sell in order to incur the least cost = 40 gadget.

We experienced a few technical difficulties when trying to submit the answers for (a) and (b) questions, but we made it much easier because we have the screenshots and we have attached it in the diagram below.

Thanks

If you invest 11775.00 at a rate of 7.10 percent annum, compounded quarterly what will the total value of your investment be after 4 years

Answers

Answer:

The total value of the investment will be $15,603.38 after 4 years

Step-by-step explanation:

Compound Interest

It occurs when interest in the next period is earned on the principal sum plus previously accumulated interest.

We'll use the formula:

[tex]{\displaystyle A=P\left(1+{\frac {r}{n}}\right)^{nt}}[/tex]

Where:

A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

The investment is P=$11,775 at a rate of r=7.10% = 0.071 compounded quarterly. Since there are 4 quarters in a year, n=4. The investment will last t=4 years, thus:

[tex]{\displaystyle A=\$11,775\left(1+{\frac {0.071}{4}}\right)^{4*4}}[/tex]

[tex]{\displaystyle A=\$11,775\left(1.01775\right)^{16}}[/tex]

[tex]\boxed{A = \$15,603.38}[/tex]

The total value of the investment will be $15,603.38 after 4 years

x=y+3
4 = 3x - 2y
It’s substitution but I don’t know how to do it

Answers

Answer:

4= 3(y+3) - 2y (substitute the given x-value into the equation to solve for y)

4= 3y+9-2y (use the distributive property)

4=y+9 (combine like terms)

y= -5 (subtract 9 from both sides to isolate the y-term)

plug it in

x= (-5)+3

x=-2

(-2,-5)

x= -2, y= -5

plug x=y+3 into the second equation
4= 3(y+3) -2y

solve for y
4= 3y+9 -2y
4=y+9
y= -5

plug y= -5 into either equation to get x
x= -5+3
x=-2

PLZ HELP, WILL MARK BRAINLEST

Answers

Answer:

A and B

Step-by-step explanation:

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