A sports writer wants to see if a football filled with helium travels farther, on average, than a football filled with air. 11 footballs were filled with helium to the recommend pressure and 12 footballs were filled with air to the recommended pressure. The mean yardage for the helium filled footballs was 291 yards with a standard deviation of 4 yards. The mean yardage for the air filled footballs was 285 yards with a standard deviation of 2 yards. Assume the populations are normal with equal variances.

(a). Construct a 80% confidence interval for the mean difference in in yardage for the two types of footballs

Lower bound

(use 3 decimal places)

Upper bound

(use 3 decimal places)

(b). What can you conclude about the sports writer's idea that helimum footballs travel farther, on average?

Answers

Answer 1
6900 yards total unless it’s Lamar Jackson

Related Questions

876,198 rounded to the nearest thousand

Answers

Your answer should be 876.

Answer:

876,000

Step-by-step explanation:

876,000

the Greatest Common Factor of 24, 36 and 50

Answers

Answer:

2

Step-by-step explanation:

they all share a factor of 2

Help please just this I will mark someone's answer the brainliest if they answer correctly.

3. A library charges a late fee of $3.50 plus $0.15 per day that a book is returned late. B. Make an equation to find if the total fee if a book is 10,15,20, or 25 days late. Then graph the ordered pairs.​

Answers

Answer:

a. f = 3.50 + 0.15d

b. please see the analysis

Explanation and graph given in the picture

I hope it helps.

Does the point (5, -1) lie on the line 2y + 3x = 13?​

Answers

Answer: Yes

Step-by-step explanation:

You can find out by inputting your values

2y + 3x = 13

x = 5

y = - 1

2(- 1) + 3(5) = 13

- 2 + 15 = 13

13 = 13

if a pool is 20,000 gallons and when the hose is placed in the pool to start filling up there are already 5000 gallons in there. The pool is filling up at a 1250 gallons per hour rating. how long would it take to fill up?

Answers

Answer:

12 hours

Step-by-step explanation:

if 4 friends have 8 apples how many will each friend get

Answers

2 because 8 divided by 4 is 2.

Answer:

2

Step-by-step explanation:

8/4 is 2

pls help!!!!

Sandra uses 6.39 ounces of beans in a recipe. If she triples the recipe, how many ounces of beans will Sandra need?​

Answers

Answer:

19.17 ounces

Step-by-step explanation:

If she uses 6.39 ounces for 1 recipe and she wants to "triple" the recipe we then know that triple also means 3 times.

Due to that fact we now know what our equation is:

6.39 x 3  which equals 19.17

I hope this helps have great day :)

Answer: 19.17

Step-by-step explanation:  6.39 x 3 = 19.17

which of the following is not a true dilation?

A. The image and preimage have congruent angles

B. The image and preimage have proportional sides

C. The image and preimage are congruent

D. The image and preimage are similar

Answers

Answer:

umm i think it is B.

Step-by-step explanation:

1/2v-12+20=14
whats the answer of v

Answers

Answer:

v=12

Step-by-step explanation:

1/2v-12+20=14

Add.

1/2v+8=14

Subtract 8 from both sides of the equation.

1/2v=6

Divide 1/2 from both sides of the equation.

v=12

Hope this helps :)

What is 5/6 of 78kg?

Answers

65 kg i think or 143 pounds

3^x X 9^4 = 3^n
Find n in terms of x

Answers

Answer:

n = x + 8

Step-by-step explanation:

Using the rules of exponents

[tex]a^{m}[/tex] × [tex]a^{n}[/tex] = [tex]a^{(m+n)}[/tex]

[tex](a^m)^{n}[/tex] = [tex]a^{mn}[/tex]

Then

[tex]3^{x}[/tex] × [tex]9^{4}[/tex] = [tex]3^{n}[/tex]

[tex]3^{x}[/tex] ×[tex](3^2)^{4}[/tex] = [tex]3^{n}[/tex]

[tex]3^{x}[/tex] × [tex]3^{8}[/tex] = [tex]3^{n}[/tex]

[tex]3^{x+8}[/tex] = [tex]3^{n}[/tex]

Since bases on both sides are equal, both 3, then equate exponents

n = x + 8

who knows what 59.95 multiplied by 44.95. And 13.95 multiplied by 15.95.

Answers

Answer:

→ 59.95 multiplied by 44.95 is 2694.7525

→ 13.95 multiplied by 15.95 is 222.5025

(I am not sure if this is correct but I hope you get this correct, but I wish you  good luck! with your homework.)


2.

Find the slope of the line that passes through the points (4,2) and (4,10)

Answers

Answer:

The slope is unidentified

Step-by-step explanation:

The equation of the line is x=4

If Marlene can type 157 words per minute how many words can she type in 25 minute

Answers

Answer:

3925

Step-by-step explanation:

25x

25*157

write the equation of the line from the given information. slope 1/2, through (4,-3)

Answers

Answer:

y+3 = 1/2 (x-4)

Step-by-step explanation:

We can write the equation in point slope form

y-y1 = m(x-x1)

The slope is m and the point is (x1,y1)

y - -3 = 1/2(x -4)

y+3 = 1/2 (x-4)

If there are four quarts in a gallon, how many quarts are in 101/2 gallons?

Answers

Answer:

202

Step-by-step explanation:

Select all statements that are true about the triangles.

Figure ABCD with diagonal BC, sides AB and DC are congruent, angle A is congruent to angle D and sides AC and DB are congruent.
Group of answer choices

Triangles ABC and BCD are congruent by the Angle-Side-Angle Triangle Congruence Theorem.

Triangles ABC and DCB are congruent by the Angle-Angle Triangle Congruence Theorem.

Triangles ABC and DCB are congruent by the Side-Side-Side Triangle Congruence Theorem.

Triangles ABC and DCB are congruent by the Side-Angle-Side Triangle Congruence Theorem.

Triangles ABC and BCD are congruent by the Side-Side-Side Triangle Congruence Theorem.

There is not enough information to determine if the triangles are congruent

Answers

Answer:

Triangle ABC and BCD are congruent by the side side side triangle congruence theorem

help pleaseeeeeeeeeeeeeeeeeeee

Answers

Answer:

Step-by-step explanation:

ford would be 250 in metres and the decimal would be the smallest

jerry, Simon, curst, carl, ford

3/4x3-2= -1/4+1/2x+5

Answers

Answer:

what I think the answer is ×=-9

Answer:

[tex]x[/tex] = 19

Someone please help me. Thank you!

Answers

Answer:

y = -1/2x

Step-by-step explanation:

Okay, so you probably heard of the slope-intercept form, y = mx + b. We have to use that formula to create a line that goes through (2,1), because thats the bisector.

Let's have our point start at the origin, (0,0). This you make our equation of y=mx+b   into   y = mx + 0. Since it's 0, let's just drop it out of our equation.

So now for slope. Rise/Run is what we're going to use to create our slope. Since we started at the origin, our slope is going to be negative. We can go down one over two from the origin to get to points (2,1) so why can't that be our slope? We're rising -1, and running 2, making our slope -1/2. In the equation, it would be y= -1/2x + 0, which can be simplified into y = -1/2x

It's a lot of writing and explaining, so I hope this helps! Try asking your teacher just to make sure it's correct.

I need help pls help me

Answers

Answer:

$1,270

Step-by-step explanation:

let x be the total amount of ice cream sold without tax

x + (x*0.0635)=21270

1.0635x=21270

x=20,000

so the amount he needs to send to state is

21270-20000

1,270

Total cost of icecream without cost be x

[tex]\\ \sf\longmapsto x+0.0635x=21270[/tex]

[tex]\\ \sf\longmapsto 1.0635x=21270[/tex]

[tex]\\ \sf\longmapsto x=21270/1.0635=20000[/tex]

Amount to be paid

[tex]\\ \sf\longmapsto 21270-20000=1270[/tex]

Pls help me i only have 20 mins

Answers

Answer:

In bold below.

Step-by-step explanation:

Part 1A: 60 hours * $11.50.

Ashly's GMI is $690.00

Part 2A: To find out how much Ashly's income goes towards technology, we need to find out how much 10% of $690.00 is. To do that, multiply 690 * 0.1. You'll get $69.00.

$69.00 goes towards Ashly's technology.

Part 2B: To find out how much she spends on lunch, we must do the same as above, only replacing 0.1 with 0.02. 690.00 * 0.02 = 13.8

$13.80 goes towards Ashly's technology.

Part 2C: $13.80 + $69.00 = $82.80

$82.80 is Ashly's monthly deductions.

Part 3A: If Ashly's annual salary is $8,280, we divide that by 12 to see how much she gets per month.

 Ashly's GMI is $690.00

PERSONALLY I thought it would be 98 Bc like yk..BUT I FEEL LIKE IM WRONGsend help beggin cryin throwin up I hate geometry so much

Answers

Answer:

X=98(Being corresponding angle)

You are correct

-
Which equation represents a line which is parallel to the line 7y - 4x = -14?

Oy= 1x + 2
O y = x - 1
O y = -x + 6
Oy = -x - 3

Answers

it should be y=1x+2 but if it isn’t let me know and i’ll check my mistakes.

james has a rope that is 7 1/2 meters in length. He must cut the rope into 1/2 meter strips for a home improvement project he is working on. How many 1/2 meter strips can he cut?

Answers

Answer:

He can cut 15 1/2 meter strips.

Step-by-step explanation:

10 1/2 meter strips are 5 meters in length.

5 1/2 meter strips are 2.5 meters in length.

5 + 2.5 = 7.5 meters in length

Katie's favorite deli has a salad bar where she can make her own salad. She has to pay $1 for the container and $3 per pound for the salad.
Write an equation that shows how the total cost, y, depends on weight of the salad in pounds, x.
Do not include dollar signs in the equation

Answers

Answer:

y = 3x + 1

Step-by-step explanation:

Answer: y = 3x + 1

Step-by-step explanation:

Following the y = mx + b theory, we can find the equation (see attached image) by plugging in two points of the hypothetical graph.

For one pound of salad, Katie will pay $4 ($3 for the salad, $1 for the container). Thus, the first point will be (1,4). For two pounds, Katie will pay $7. Thus, the second point will be (2,7).

Knowing that m (slope) = [tex]\frac{y_{2}-y_{1}}{x_{2}-{x_1}}[/tex], we can get the equation m = [tex]\frac{7-4}{2-1}[/tex], thus telling us that m = [tex]\frac{3}{1}[/tex], or 3. Plug in 3 for m, and you get y = 3x + b.

To solve for b, lets' use the second point (2,7). Plug in the coordinates and you get 7 = 3(2) + b, or 7 = 6 + b. Subtract 6 from both sides and you get b = 1.

Plug in 1 for b and you end up with y = 3x + 1

PLS HELP WILL MARK BRAINLIEST!

Answers

Answer:

I think the answer is B.

Step-by-step explanation:

Answer:

c. 81x^2 -4y^2

Step-by-step explanation:

Area of full square - area of white square.

William bought 6 shirts for $119.70. How much did one shirt cost him?

Answers

Answer:

19.95

Step-by-step explanation:

i just divvied 119.70 by 19.95

To form a hyperbola what is the relationship between the base of the cone and the angle of the plane that intersects the cone

A. The plane is a parallel to the base of the cone

B. The plane may be perpendicular to the base of the cone

C. the plane must be at a 45 degree angle to the base of the cone

D. The plane is at an angle that is neither parallel nor perpendicular to the base of the cone

Answers

It’s b, you’re welcome.

Please help me with this homework

Answers

Answer:

B) y=3x-2

Step-by-step explanation:

The y-intercept would be -2, as you can see on the graph. Also, the slope would be 3. Slope-intercept form is y=mx+b, where m is the slope and b is the y-intercept. Now you can plug in with numbers. y=3x-2.

Answer:

Is the answer you put correct? if not, i'll put it down underneath step-by-step.

If you're trying to find the y-intercept (its helpful), go to the 0  on the graph and try to find where the crosses (hint: y=-2). I think b is correct, either b or d. because y=-2 and those two only have 2 in them. Happy to help if i did!

You can give the other one brainliest

Other Questions
Find the equation of this line. math need helps i will brainliest Will the supernatural be an important theme in Macbeth? Why or why not? Can anybody help we me with these? Im really struggling on them. A student did 24 J of work on a chair. She applied a force of 12 N and moved the chair 2 m. What else do you need to know to determine the amount of power used? How can the community reduce violence?A. improving lighting at nightB. having home security systemsC. requiring home owners to have a dogD. wearing uniforms there are 30 men and 15 of them have facial hair how much percentage would that be 12x3y2z3 - 8x2y2z2 + 20xy2z3 Help please I rlly dont understand What might the author have included Ryan O'brien's guide to poetic forms? what is 9038 x 8389if u answer ill give u a crown thing Microscopes use _______ lenses which refract the light to a single point, causing the image of the object to appear larger. can some one answer this questions please pls help i need it. You are the Parish Youth Ministry treasurer Every year your organization conducts a fundraising activity to help the poor school-children in your parish. This year, your organization aimed to help 500 school-children by providing them school supplies. You have been tasked by the Parish Priest to lead this year's fundraising activity. Together with your co-officers, you go to Divisoria which is known to be the place where the cheapest prices for school supplies can be found. Here is the list of the items that you need and their prices. what is the total amount of this price per item? make a clear and accurate computation of the trial amount needed to buy all the school supplies that you need. present it to the praish priest who will approve budget. guide questions: 1. how much money does your organization need for this project? 2. if you already have a an existing fund of php 1,200.00, do you still need to raise a fund or not? why? 3. are you also a member/officer of an organization in your parish? if yes, write one among your remarkable experience for being a member of the organization. Why can't a traveler rely on the oases in the Sahara Desert? Thank you!!! which tradition common among African peoples primed them to accept Christianity and Islam?A. belief in powerful forces of good and evil.B. faith in one supreme unknowable god.C. honoring of spirits in rocks, trees, and elements of nature.D. practice of ancestor worship. Which of the following adjectives most closely describes the tone of the passage below (paragraph 4)?About me lie the remnants of Solo. My equipment is properly secured, vital systems are functioning, and daily priorities are set, priorities not to be argued with. I somehow rise above mutinous apprehension, fear, and pain. I am captain of my tiny ship in treacherous waters. I escaped the confused turmoil following Solos loss, and I have finally gotten food and water. I have overcome almost certain death. I now have a choice: to pilot myself to a new life or to give up and watch myself die. I choose to kick as long as I can.Answer choices for the above questionA. determinedB. apprehensiveC. defeatedD. excited which 1990 film was the first to receive the nc-17 rating? ___ ich nach Hause gekommen bin, ist niemand da gewesen.WennWannAls what do you think is the reason why there are two kinds of transmission mode in computer networking?